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JavaScript - Getelementbyid With Calculation Difficulty
I'm making a form for my rural neighbors' electricity calculations.
My main problem is getting the Previous and Current reading to subtract each other and post in the "kwh Used" column. My plan is to continue doing the calculations after I find that value. Here is the code thus far: Code: <head>
<title>Untitled Document</title>
<script language="javascript">
function calc()
{
preR= Number(document.Bill_cal.PrRe.value);
curR= Number(document.Bill_cal.CuRe.value);
diff=preR-curR;
document.getElementByID("kwhu").innerHTML=diff;
}
</script>
</head>
<body><center>
<form name="Bill_cal" method="post" />
<input type="checkbox" value="Residential Account" name="Residential_Account" />Residential Account
<input type="checkbox" value="GSS/Business Account" name="GSS_Business Account" />GSS/Business Account
<br />
<br/>
<input type="checkbox" value="Winter_Rate" name="Winter_Rate" onchange="" />Winter Rate
<input type="checkbox" value="Summer_Rate" name="Summer_Rate" onchange="" />Summer Rate
<br />
<br/>
<input type="checkbox" value="Butler" name="Butler" onchange="" />Butler
<input type="checkbox" value="Chautauqua" name="Chautauqua" onchange="" />Chautauqua
<input type="checkbox" value="Cowley" name="Cowley" onchange="" />Cowley
<input type="checkbox" value="Elk" name="Elk" onchange="" />Elk
<input type="checkbox" value="Montgomery" name="Montgomery" onchange="" />Montgomery
<br/>
<br/>
<input type="checkbox" value="Security Light" name="Security" />
Security Light
(Check if Yes)
<br/>
<br/>
</center>
<center>
<table width="600" border="1"><center>
<tr>
<th width="254" scope="col"> </th>
<th width="168" scope="col"> </th>
<th width="156" scope="col"> </th>
</tr>
<tr>
<th scope="row">Previous Reading</th>
<td><input type="text" name="PrRe" value="" /></td>
<td> </td>
</tr>
<tr>
<th scope="row">Current Reading</th>
<td><input type="text" name="CuRe" value="" /></td>
<td> </td>
</tr>
<tr>
<th scope="row">kwh Used</th>
<td>
<p id="kwhu"></p>
</td>
<td> </td>
</tr>
<tr>
<th scope="row">kwh Charge</th>
<td></td>
<td> </td>
</tr>
<tr>
<th scope="row">Subtotal</th>
<td>$</td>
<td> </td>
</tr>
<tr>
<th scope="row">Tax</th>
<td>$</td>
<td> </td>
</tr>
<tr>
<th scope="row">PCA Charge from card:</th>
<td><input type="text" name="PCA" value="" /></td>
<td> </td>
</tr>
<tr>
<th scope="row">Any Additional amount from card:</th>
<td><input type="text" name="PCA" value="" /></td>
<td> </td>
</tr>
<tr>
<th scope="row">Total:</th>
<td>$</td>
<td> </td>
</tr>
</center></table>
<input type="submit" value="Click here" onclick="calc()">
</form>
</center></body>
</html>
One other issue I will probably run into and while I am on here posting. Can I preform a if statement within a if statement? Example: Code:
if (Business is checked)
{
if (Winter is Checked)
{
}
else if (Summer is Checked)
{
}
}
Similar TutorialsHey everyone! I am pretty new to JS and I am having a problem figuring this loops structure out - any help would be appreciated. I am trying to add a password to an html page via an external JS file. (I know this isn't an ideal solution for securing a page - I am just trying to use this for trying to understand loops.) What I am trying to do is prompt the user to enter a password before the html page loads. If the password is correct they can enter the page. If they guess wrong the user is looped back to a prompt box to try again. If they fail 3 times they should be told via an alert box and sent off somewhere else. I have tried using a for & do while loop and was unsuccessful. I think this is the best way to go. This is what I have so far: Code: var password = prompt('All women a ',' ');
var pass1 = "Psycho";
var counter = 0;
if (counter < 3) {
if (password = pass1) {
alert('Password Correct! Click OK to enter!');
counter++
}
else {
alert("Password Incorrect!!!");
window.location="Lab5Part2.html";
}
}
else {
alert("You have failed 3 times!");
window.location="http://www.google.com";
}
Hi there, I'm trying to port a pretty old javascript to a brand new Joomla website. I didn't create the original site that the javascript comes from, and haven't been able to locate it in my Google searches either. I'm assuming it's quite old. That being said, it seems to *want* to load up correctly. Since this is in an individual Joomla article, I didn't want to set the template to always try and load this script from <body>, so I'd found what I thought might be a workaround by calling it from another javascript within the article. It *looks* like it starts to want to call the required images, but then they disappear. I am not a javascript programmer in any way. I really don't do more than copy & paste various scripts of that nature. So I'm a little flummoxed here. Any help you can afford will be appreciated. Here is the development page: Mixes Thanks in advance. ~Laura I've recently picked up HTML and CSS, and am getting to grips really quickly. The principles are really straight forward, you just need to understand a few key principles and then with practice you can remember most tags/elements/attributes etc, although I would rather have the understanding rather then not have the understanding and remember all the tags (I can remember most tags I need anyway. So PHP and Javascript are obviously the next ports of call once I feel I am proficient with HTML and CSS. How hard is it to understand the principles of Javascript and become effective in it? Originally I had the following code. What it does is for a user to type the folder name of their choice and then after clicking submit a window will pop open and they will be taken to "C:\folder" (assuming the user typed "folder" and such a folder existed). Here is the code in case I wasn't clear. Code: <html>
<head>
<script type="text/javascript">
function goTo()
{
var drive = document.forms[0].drive.value;
var folder = document.forms[0].folder.value;
window.location = drive+folder;
return false;
}
</script>
</head>
<body>
<center>
<b><u>Folder Search</u></b>
<form action="" method="get" onsubmit="return goTo()">
Choose drive:
<input type="hidden" name="drive" id="drive" value="C:\">
<br>
Enter folder name:
<input type="text" name="folder" id="folder">
<p>
<input type="submit" value="Submit">
</form>
</center>
</body>
</html>
However, what I want to do now is change it so that the user can click on radio buttons to choose the drive they want. I realize I could use the code above and have the user type in the drive they want but I would rather have radio buttons for them to choose. Here is what I have so far. Code: <html>
<head>
<script type="text/javascript">
function goTo()
{
var drive = document.forms[0].drive[i].value;
var file = document.forms[0].file.value;
window.location = drive+folder;
return false;
}
</script>
</head>
<body>
<form method="get" action="" onsubmit="return goTo()">
Choose Drive:
<input type="radio" name="drive" id="C Drive" value="C:\">C Drive
<input type="radio" name="drive" id="D Drive" value="D:\">D Drive
<input type="radio" name="drive" id="F Drive" value="F:\">F Drive
<br>
Enter Folder Name:
<input type="text" name="folder" id="folder">
<p>
<input type="submit" value="Submit">
</form>
</body>
</html>
Now after the user clicks submit nothing really happens. I'm a real n00b at this. I could use some help. Thanks in advance. i have been tryin for a long time to get both of the javascripts(for the thumbnail to main img swap and the navigational arrow swap) to work in synch http://***.com/nn.html it needs to be so that after clicking on a thumbnail then on an arrow, the correct image in the correct order appears. as of now they are running separately and one has no influence on the other. forgive me if im not being clear. i keep trying to replace the id that one script is looking for with the same id from the other but this will not work..why? please help me...believe me ive tried to help myself by reading all i can understand on the web about this but im in the dark thanks Hello again; I am testing in Firefox( two versions ), Chrome, Opera (two versions), Safari on Mac OSX and am seeing a peculiarity. Code: <div id="dialog" style="position:absolute;top:50px;left:600px;"> <div id="head"><p id="panelTitle">Item Info:</p></div> <p>Drag this panel to move </p> <pre id="target1"><img id="srcImg" src="windows/img/front_window.jpg" alt="test" /></pre> <pre id="target2"> </pre> <div id="closer"><p class="dialog"><a id="dClose" href="javascript:">Close</a></p></div> event listener assigned to a separate anchor tag makes this markup visible and drag-able. The mousemove event listener for dragging is assigned to the parent div, id='dialog' In Firefox and Google's Chrome browser, if I mousedown on the image and try to drag, the system tries to move and copy the image. When I release the mouse, the whole panel sticks to the pointer and moves with the pointer until I click on it. The Question: What event would I do preventDefault, cancelbubble, or return false to get around this? (perhaps for a separate post, how would I prevent the client form copying content?) Safari will do the same accept that it will not stick to the mouse pointer position on mouseup. In Opera, it works fine (accept the earlier verison, v9x leaves a trail of ghost lines where the panel was moved from) I have a pc with I.E. and have not yet tested this specific issue. Thank you for your time and attention JK I'm an online web design student and i'm currently taking a javascript class Ive used java in the past but that was ten years ago so ive been spending time refamiliarizing myself with it I've ran into a problem with the popup coding I was given to use I have to take this image gallery and make the image thumbnails pop up into the larger view of the image using just the java pop up window, but somehow for some reason my coding is opening up the image in both windows, the window that the thumbnails are on and the separate window, its frustrating me to death! i have to keep hitting the back button on the main page whenever i click on an image link because it opens it in both windows simultaenously. i have to submit the project because it's due but i want to work on getting this problem resolved for the future. I've attached a plain text notepad document to my post so you can see the coding Hi, I am using following code-- Code: <td>
<centre>
<select id=\"extenddays\" size=\"1\" name=\"extenddays\">
<option value\=\"2\"> 2 </option>
<option value\=\"4\"> 4 </option>
<option value\=\"7\"> 7 </option>
</select>
<a href=?ext_days=\"extendform.extenddays.value\" & ?extfid=" . $data->{'fid'} ." \" >
<INPUT TYPE=\"SUBMIT\" NAME=\"extend\" VALUE=\"extend\" />
</a>
</centre>
</td>
Here, I want that when I click on 'extend' button, it should redirect to the url given in the href.. But while forming url run time , it is not retrieving the value of "extenddays" ( which is selected option value).. Please help. Cheers, Shashikant Shinde Hi, I am a JavaScript novice, and appreciate any help you can give. For design reasons, we did not like the appearance of a still video on our web page. So I write a short little script to replace a picture that we selected, with the code for a flash player, once the image was clicked. The code works exactly as designed on IE and Chrome. It works *almost* as designed on Firefox and Safari -- but on those browsers the "fullscreen" button in the plugin doesn't work. It is *not* a problem with the FlowPlayer code. If I simply put the FlowPlayer code into a web page, it works fine. I think that somehow some browsers do not want to let the FlowPlayer expend outside of the JavaScript object box I created -- though that is just an hypthesis. If you have any insight or suggestions, I would appreciate it. The page is at http://sudval.org/test.html The code: Code:
<div style="line-height: 12px;letter-spacing: 0px;">
<script type="text/javascript">
function changeText(){
var strOut;
strOut = " <object id=\"videoplayer\" width=\"334\" height=\"204\" type=\"application/x-shockwave-flash\" data=\"http://app.provdn.com/flash/flowplayer.swf\">";
strOut = strOut + " <param name=\"movie\" value=\"http://app.provdn.com/flash/flowplayer.swf\" />";
strOut = strOut + " <param name=\"allowFullScreen\" value=\"true\" />";
strOut = strOut + " <param name=\"allowscriptaccess\" value=\"always\" />";
strOut = strOut + " <param name=\"flashvars\" value=\"config={\'playlist\':[{\'url\':\'http://cdn.provdn.com/4931/thumbnail/frame_0000.png\',\'scaling\':\'fit\'},{\'url\':\'http://app.provdn.com/output_videos/0e7c9ace9c16d4351b5108133cf1efaceebe89bb\',\'autoPlay\':true,\'scaling\':\'fit\'}],\'plugins\':{\'controls\':{\'url\':\'http://app.provdn.com/flash/flowplayer.controls.swf\',\'playlist\':false,\'backgroundColor\':\'#000000\',\'tooltips\':{\'buttons\':true,\'fullscreen\':\'Enter Fullscreen mode\'}},\'bwcheck\': { \'url\': \'http://app.provdn.com/flash/flowplayer.bwcheck-3.1.3.swf\', \'netConnectionUrl\': \'http://cdn.provdn.com/bitrate/test.mp3\', \'bitrates\': { \'http://app.provdn.com/output_videos/542539e49d4056ce6d3968958313be3dee94614b\':200, \'http://app.provdn.com/output_videos/d31b9a3562c35244cb2c2a28bb4a9aaa1edd1995\':600, \'http://app.provdn.com/output_videos/0e7c9ace9c16d4351b5108133cf1efaceebe89bb\':1000 }, \'urlPattern\': \'{1}\', \'urlExtension\': \'swf\' }}}\" />";
strOut = strOut + " <param name=\"bgcolor\" value=\"#000000\" />";
strOut = strOut + " <param name=\"wmode\" value=\"opaque\" />";
strOut = strOut + " <!--[if gt IE 6]><!-->";
strOut = strOut + " <object width=\"334\" height=\"204\" type=\"video/quicktime\">";
strOut = strOut + " <param name=\"src\" value=\"http://cdn.provdn.com/4931/thumbnail/frame_0000.png\" />";
strOut = strOut + " <param name=\"href\" value=\"http://app.provdn.com/output_videos/54339bc0f4a7c39dd0d746f52139d3a6b6c46375\" />";
strOut = strOut + " <param name=\"target\" value=\"myself\" />";
strOut = strOut + " <img src=\"http://cdn.provdn.com/4931/thumbnail/frame_0000.png\" width=\"334\" height=\"204\" alt=\"No Video\" title=\"No video playback capabilities.\" />";
strOut = strOut + " </object>";
strOut = strOut + " <!--<![endif]-->";
strOut = strOut + " </object>";
document.getElementById('boldStuff').innerHTML = strOut ;
}
</script>
<b id='boldStuff' onclick='changeText()'><img src="images/videoimg.png" alt="no video" title="Introductory Video" width="334" height="204"></b>
<p><A HREF="/08_cont_03.html"><img src="images/OH012211.jpg" alt="button" width="161" height="181" title="Open House!" BORDER="0" ALIGN="right" style="margin-left: 10px;"> </A></p>
<font size="2" style="font-family:arial; font-size:80%; line-height:1.3;">
<p id='boldStuff' onclick='changeText()' align="left">
This video is a glimpse into the life of our school. Enter a world of young people who are exuberant about their lives, and are fully in control of their education. We hope you will enjoy their spirit, their focus, and above all their intensity in pursuing their passions.
<br><img src="images/playvid.png" alt="Play Video" title="Play Video" width="100" height="25" style="margin-top:10px;">
</p>
</font>
</div>
Ok I am looking for a simple bmi calculator that calculates body mass index then in a seperate table calculates what a target weight should be based on the goal bmi. no need for making it look fancy, just functionality for now. thanks!
Hi everyone, I am new to Javascript and took a class or 2 in college, but need some help. I need to make a calculation for a webpage that will do the following: Client will insert AWG (wire ) Size, then it will derive the correct Circular Mils that the AWG is equal to from an Access Database ( I assume this is the way to set that up or if I can in Javascript itself, thats fine as well ), then Multiply it by the Number of Strands that the Client will also insert. I had this all set up in Visual Basic and working great, and my boss said he does not want it in a pop up box but prefers it on the website itself hence me reverting to Javascript for this. To visualize it Image 2 boxes with AWG and STRANDS that the client will put in, then another box with TOTAL CMA where the answer will pop up after it has multipled by the AWG individual CMA and number of Strands. I have the general idea to set it up, just do not know how to get the Database in there and Code it properly or whatever. I would appreciate any assistance I can get :-) Thanks everyone. Hi, I'm trying to make a calculator app; with a few differences. I have a text field with a numberpad below it, I got the numbers to show up in the text field, but am unsure as to how when I hit the enter button - it would store them in a variable?...I am also wondering as to how it would store current value and then allow me to input another value(maybe on the next page) and either subtract or add to it(the first value that is stored). I am also wondering how to get a decimal point in place(need it for currency). Any help would be greatly appreciated! Here is my code: Code: <html>
<head>
<script type = "text/javascript">
function decPoint(str){
if (str.indexOf('.') == -1) str += ".";
var decNum = str.substring(str.indexOf('.')+1, str.length);
if (decNum.length > 2)
{
alert("Invalid more than 2 digits after decimal")
}
else {
alert("Valid no")
}
}
var ent = document.write(document.getElementById("curamt").value);
</script>
</head>
<body border = "1"; color = "blue";>
<div id = "cur">
<p>amount is: <script>document.getElementById("amount").innerHTML = ent);</script>
</p>
<b>Please type in price of item:</b>
<form name = "calculator">
<table border = "1"; color = "blue";>
<tr>
<td colspan = "3" width="75%" align = "center">
<input type = "tel" id = "curamt" name = "tinput" maxlength="4" size="6">
</td>
</tr>
<table>
<tr>
<td><input type = "button" name = "one" value = " 1 " onclick = "calculator.tinput.value += '1'"></td>
<td><input type = "button" name = "two" value = " 2 " onclick = "calculator.tinput.value += '2'"></td>
<td><input type = "button" name = "three" value = " 3 " onclick = "calculator.tinput.value += '3'"></td>
</tr>
<tr>
<td><input type = "button" name = "four" value = " 4 " onclick = "calculator.tinput.value += '4'"></td>
<td><input type = "button" name = "five" value = " 5 " onclick = "calculator.tinput.value += '5'"></td>
<td><input type = "button" name = "six" value = " 6 " onclick = "calculator.tinput.value += '6'"></td>
</tr>
<tr>
<td><input type = "button" name = "seven" value = " 7 " onclick = "calculator.tinput.value += '7'"></td>
<td><input type = "button" name = "eight" value = " 8 " onclick = "calculator.tinput.value += '8'"></td>
<td><input type = "button" name = "nine" value = " 9 " onclick = "calculator.tinput.value += '9'"></td>
</tr>
<tr>
<td><input type = "reset" name = "clear" value = " c " onclick = "calculator.tinput.value = ''"></td>
<td><input type = "button" name = "zero" value = " 0 " onclick = "calculator.tinput.value += '0'"></td>
<td><input type = "submit" id = "amount" name = "enter" value = " e " onsubmit = "ent(); return false;"></td>
</tr>
</table>
</table>
</form>
</div>
</body>
</html>
I need help with a javascript calculation. I am a noobie developer as you will probably see by my script but here are my goals: I already have a working bmi calculator for my website where visitor will enter height and current weight to calculate their current bmi. then I want to have a reverse bmi calculator to grab the same height and weight from said bmi calculator to give a calculation with a fillable goal bmi (example: 18-24 "healthy bmi") to read out a goal weight for them to achieve. I have already figured out the first part of the bmi calculation now i just need the second calculation to grab the height and weight from original bmi calculator without needing to be filled in again and compute result in a second table. I will post code that I have come up with so far for the whole page. Thank you in advance for your help! [CODE] <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title> HCG Drops Fat Lose 1-2 pounds Per Day! </title> <style type="text/css"> #wrapall { width:1000px; align:center; margin-left: 7em; margin-right: 7em; } #navigationbar{ } #bmibar { width:973px; background-image:url(bmibar2.jpg); background-repeat:no-repeat; background-position:left bottom; padding-bottom:16em; margin:4px; } #Hcgborder { width:973px; background-image:url(index_15.jpg); background-repeat:no-repeat; background-position:left bottom; padding-bottom:17em; } #Hcgborder h3 { width:973px; background-image:url(index_12.jpg); background-repeat:no-repeat; background-position:left top; margin:0px; padding-left:4em; padding-top:8em; } p { background-image:url(index_13.jpg); background-repeat:repeat-y; background-position:left center; margin:0px; padding-left:4em; padding-right:4em; font:family"arial" } #bmiscale{ font-size:14px; padding-left:15px; } #Hcgborder2 { width:973px; background-image:url(index_19.jpg); background-repeat:no-repeat; background-position:left bottom; padding-bottom:0.5em; } #dhtmlgoodies_bmi_calculator{ width:180px; /* Width of entire calculator */ height:145px; /* Height of entire calculator */ font-family: Trebuchet MS, Lucida Sans Unicode, Arial, sans-serif; /* Fonts to use */ } #dhtmlgoodies_bmi_calculator .calculator_form{ /* Form */ width:180px; /* Width of form div */ float:left; /* Position the form at the left of the graph */ padding-left:5px; padding-right:5px; } #dhtmlgoodies_bmi_calculator input{ width:130px; } #dhtmlgoodies_bmi_calculator .calculator_form .textInput{ width:40px; /* Width of small text inputs */ text-align:right; /* Right align input text */ } .barContainer{ /* DIV for both the multicolor bar and users weight bar */ position:absolute; bottom:0px; border:0px solid #4ff; border-bottom:0px; text-align:center; vertical-align:middle; } .barContainer div{ /* colored div inside "barContainer */ border-bottom:1px solid #000; } .barContainer .labelSpan{ /* Label indicating users BMI */ background-color:#FFF; /* White BG */ border:1px solid #000; /* Black border */ padding:1px; /* "Air" inside the box */ font-size:0.9em; /* Font size */ } .clear{ /* Clearing div - you shouldn't do anything with this one */ clear:both; } </style> <script type="text/javascript"> var useCm = false; // Using centimetre for height, false = inch var useKg = false // Using kilos for weight, false = pounds var graphColors = ['#00baff','#02eb07','#ffb400','#ff0000']; var graphLabels = ['']; var labelsPerRow = 1; /* Help labels above graph */ var barHeight = 50; // Total height of bar var barWidth = 50; // Width of bars */ // Don't change anything below this point */ var calculatorObj; var calculatorGraphObj; var bmiArray = [0,18.5,25,30,60]; /* BMI VALUES */ var weightDiv = false; function calculateBMI() { var height = document.bmi_calculator.bmi_height.value; var weight = document.bmi_calculator.bmi_weight.value; height = height.replace(',','.'); weight = weight.replace(',','.'); if(!useKg)weight = weight / 2.2; if(!useCm)height = height * 2.54; if(isNaN(height))return; if(isNaN(weight))return; height = height / 100; var bmi = weight / (height*height); createWeightBar(bmi); } function createWeightBar(inputValue){ if(!weightDiv){ self.status = Math.random(); weightDiv = document.createElement('DIV'); weightDiv.style.width = barWidth + 'px'; weightDiv.className='barContainer'; weightDiv.style.left = Math.round((calculatorGraphObj.offsetWidth/2) + ((calculatorGraphObj.offsetWidth/2) /2) - (barWidth/2)) + 'px'; calculatorGraphObj.appendChild(weightDiv); var span = document.createElement('SPAN'); weightDiv.appendChild(span); var innerSpan = document.createElement('SPAN'); innerSpan.className='labelSpan'; span.appendChild(innerSpan); }else{ span = weightDiv.getElementsByTagName('SPAN')[0]; innerSpan = weightDiv.getElementsByTagName('SPAN')[1]; } var color = graphColors[graphColors.length-1]; for(var no = bmiArray.length-1;no>0;no--){ if(bmiArray[no]>inputValue)weightDiv.style.backgroundColor = graphColors[no-1]; } if(inputValue/1>1){ innerSpan.innerHTML = inputValue.toFixed(2); span.style.display='inline'; }else span.style.display='none'; var height = Math.min(Math.round(barHeight * (inputValue / bmiArray[bmiArray.length-1])),barHeight-10); span.style.lineHeight = Math.round(height) + 'px'; weightDiv.style.height = height + 'px'; } function validateField() { this.value = this.value.replace(/[^0-9,\.]/g,''); } function initBmiCalculator() { calculatorObj = document.getElementById('dhtmlgoodies_bmi_calculator'); calculatorGraphObj = document.getElementById('bmi_calculator_graph'); if(!useCm)document.getElementById('bmi_label_height').innerHTML = 'inches'; if(!useKg)document.getElementById('bmi_label_weight').innerHTML = 'pounds'; var heightInput = document.getElementById('bmi_height'); heightInput.onblur = validateField; var widthInput = document.getElementById('bmi_height'); widthInput.onblur = validateField; var labelDiv = document.createElement('DIV'); labelDiv.className = 'graphLabels'; calculatorGraphObj.appendChild(labelDiv); for(var no=graphLabels.length-1;no>=0;no--){ var colorDiv = document.createElement('DIV'); colorDiv.className='square'; colorDiv.style.backgroundColor = graphColors[no]; colorDiv.innerHTML = '<span></span>'; labelDiv.appendChild(colorDiv); var labelDivTxt = document.createElement('DIV'); labelDivTxt.innerHTML = graphLabels[no]; labelDiv.appendChild(labelDivTxt); labelDivTxt.className='label'; if((no+1)%labelsPerRow==0){ var clearDiv = document.createElement('DIV'); clearDiv.className='clear'; labelDiv.appendChild(clearDiv); } } var clearDiv = document.createElement('DIV'); clearDiv.className='clear'; labelDiv.appendChild(clearDiv); var graphDiv = document.createElement('DIV'); graphDiv.className='barContainer'; graphDiv.style.width = barWidth + 'px'; graphDiv.style.left = Math.round(((calculatorGraphObj.offsetWidth/2) /2) - (barWidth/2)) + 'px'; graphDiv.style.height = barHeight; calculatorGraphObj.appendChild(graphDiv); var totalHeight = 0; for(var no=bmiArray.length-1;no>0;no--){ var aDiv = document.createElement('DIV'); aDiv.style.backgroundColor = graphColors[no-1]; aDiv.innerHTML = '<span></span>'; var height = Math.round(barHeight * (bmiArray[no] - bmiArray[no-1]) / bmiArray[bmiArray.length-1]) - 1; aDiv.style.height = height + 'px'; graphDiv.appendChild(aDiv); } createWeightBar(1); } </script> <!-- function cal_bmi(lbs, ins){ h2 = ins * ins; bmi = lbs * h2/703 wtl = h2/703 * 24.9 f_bmi = Math.floor(bmi); diff = bmi - f_bmi; diff = diff * 10; diff = Math.round(diff); if (diff == 10){ f_bmi += 1; diff = 0; } bmi = f_bmi + "." + diff; return bmi; } function compute(){ var f = self.document.forms[0]; w = f.wt.value; v = f.htf.value; u = f.hti.value; // Format values for the calculation if (!chkw(u)){ var ii = 0; f.hti.value = 0; } else { var ii = parseInt(f.hti.value); } var fi = parseInt(f.htf.value * 12); var i = fi + ii; // Do validation of remaining fields if (!chkw(v)){ alert("Please enter your height."); f.htf.focus(); return; } if (!chkw(w)){ alert("Please enter your weight."); f.wt.focus(); return; } // Perform calculation f.bmi.value = cal_bmi(w, i); f.bmi.focus(); } function chkw(w){ if (isNaN(parseInt(w))){ return false; } else if (w < 0){ return false; } else{ return true; } } // --> </style> </head> <body> <div id="wrapall" align="center"> <img src="index_01_01.jpg" alt="Hcg drops fat banner"> <br/> <div id="navigationbar"> <a href="http://www.hcgdropsfat.com"><img src=hcghomeog.jpg border=0></a> <img src="hcgblogo.jpg" alt="Hcg blog"/> <img src="hcgfaqo.jpg" alt="Hcg faq"> <img src="hcgresourceso.jpg" alt="Hcg resources"> <img src="hcgtestimonialso.jpg" alt="Hcg testimonials"> <img src="hcgsupporto.jpg" alt="Hcg support"> <img src="hcgordero.jpg" alt="Hcg order"> <div id="bmibar"> <div style="position: absolute; top: 515px; left: 170px"; style="font-family: arial"; align="left";> How much is your weight in <br/>relation to your height <br/> <!--BMI CALCULATOR SCRIPT--> <div id="dhtmlgoodies_bmi_calculator"> <div class="calculator_form"> <form name="bmi_calculator"> <table> <tr> <td><label for="bmi_height">Height</label>:</td><td><input class="textInput" type="text" id="bmi_height" name="bmi_height"> <span id="bmi_label_height">cm</span></td> </tr> <tr> <td><label for="bmi_weight">Weight</label>:</td><td><input class="textInput" type="text" id="bmi_weight" name="bmi_weight"> <span id="bmi_label_weight">kg</span></td> </tr> <tr> <td colspan="2"><input type="button" onclick="calculateBMI()" value="Find BMI"></td> </tr> </table> </form> </div> <div class="calculator_graph" id="bmi_calculator_graph"> </div> </div> <script type="text/javascript"> initBmiCalculator(); </script> </div> <div style="position: absolute; top: 515px; left: 405px"; style="font-family: arial"; align="left";> What is your BMI category? <br/>This will help determine <br/>how much you need to lose <br/><br/><div id="bmiscale">Underweight = Under 18.5 <br/>Normal weight = 18.5 – 24.9 <br/>Overweight = 25 – 29.9 <br/>Obesity = 30 or more <br/><br/> </div></div> <div style="position: absolute; top: 515px; left: 640px"; style="font-family: arial"; align="left";> Calculate approximately how <br/>much weight you should lose<br/> to be at a healthy BMI <!--REVERSE BMI CALCULATOR--> <td width="81%" valign="top"> <br/><div align="center" class="page_header">Reverse BMI Calculator</div><br/> <div align="center" class="main_text"></div> <form action="" method="post" name="BMI_input" class="main_text" id="BMI_input"> <div style="text-align: center;"><font face="Arial, Helvetica, sans-serif">Target BMI:<b> <input id="FormsEditField4" type="text" name="wt" value="24" size="3" maxlength="2" /> <br /> </b></font></div> <div style="text-align: center;"> <font face="Arial, Helvetica, sans-serif"> <input type="button" name="FormsButton1" value="Find Target Weight" id="FormsButton1" onclick="self.compute()" /> </font></div> <div style="text-align: center;"><font face="Arial, Helvetica, sans-serif">This is your Target Weight: <br /> <input id="FormsEditField5" type="text" name="bmi" value="" size="4" maxlength="5" /> </font></div> </div> </div> <div id="Hcgborder"> <h3></h3> <p align="left"><b> WHAT IS HCG? </b><BR/><BR/>In simple terms: its a hormone protein produced by pregnant women that when used as a homeopathic dietary supplement, will assist in a revolutionary cure to the traditional diet routine. <BR/><BR/><b>HCG is so unique from other diets in 3 major ways: </b> <br/><BR/><img src="muscletissue.jpg" alt="practice"style="float:right;" width="250px" height="250px"/> 1. USES HIGHEST FAT AS PRIMARY FUEL SOURCE FOR THE BODY - it begins to break down the abnormally high body fat as the primary fuel source (BURNS ALOT OF FAT!) <BR/>2. DOESNT EAT AT VITAL MUSCLE TISSUE - it will preserve and maintain lean body muscle (without HCG THE BODY WOULD DEPLETE VITAL MUSCLE TISSUE ON A LOW CALORIE DIET. Also if you burn muscle you also lose metabolism for each pound of muscle you lose you also lose 50 calories of metabolism) <BR/>3. WHILE MOST DIETS SLOW METABOLISM HCG ACTUALLY MAINTAINS IT EVEN AFTER THE DIET - because hcg maintains lean muscle and maintains metabolism, you keep your metabolism in check long after the diet program so you reset your bodys roaming weight. <BR/><BR/>THE HOMEOPATHIC DROPS YOU WILL FIND ON OUR SITE ARE ALL NATURAL <br/><BR/><b>HOW LONG HAS IT BEEN AROUND?</b> <BR/><BR/>HCG or (Human chorionic gonadotropin)<img src="nicefigure.jpg" alt="Hcg stored fat" style="float:right;" width="250px" height="250px"/> is a protein hormone </div><!--p1--> </div><!--Hcgborder--> <div id="Hcgborder2"> <p><b>hello</b></p> <p>Hello again</p> </div><!--Hcgborder2--> </div> </div><!--wrapall--> </body> </html> [CODE] The problem that I am facing is my total amount comes out to $102.46 through my calculations on the page. But when it is moved over to PayPal, the value becomes $102.44. I have many more amount that are also either up .2 cents or down .2 cents. I managed to track this down as a rounding issue. Anytime I do the math, it rounds the amount off and gives the total. But since quantity is involved which is done through PayPal, I had to divide my total by the quantity to bring it back to its original amount thus allowing PayPal to multiply the amount by the quantity. I've pulled my hair out on this one. Ay help would be appreciated. Thank you Code: <html>
<head>
<title>TESTING</title>
<script src="SpryAssets/SpryValidationSelect.js" type="text/javascript"></script>
<script src="SpryAssets/SpryValidationCheckbox.js" type="text/javascript"></script>
<script src="SpryAssets/SpryValidationTextField.js" type="text/javascript"></script>
<link href="SpryAssets/SpryValidationSelect.css" rel="stylesheet" type="text/css">
<link href="SpryAssets/SpryValidationCheckbox.css" rel="stylesheet" type="text/css">
<link href="SpryAssets/SpryValidationTextField.css" rel="stylesheet" type="text/css">
</head>
<td width="95%" align="center" class="TextoImageSpace"><table border="0" cellpadding="0" cellspacing="0" class="TextoImageSpace_center">
<tr>
<td align="center"><h2>Pricing</h2>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post" name="price" id="price">
<p>Select amount please.</p>
<p>
<input type="hidden" name="cmd" value="_xclick" />
State: <br />
<span id="spryselect1">
<!-- selects the state // onclick changes the variables specified values -->
<select name="combo0" id="combo_0" onclick="roundNumber(amount2.value, 2);roundNumberTax(tax.value, 2);roundNumberProduct(product.value, 2);roundNumberShipping(shipping.value, 2);roundNumberAmount(amount2.value, 2)" style="width:200px;">
<option selected="selected"> </option>
<option value="70">Arizona</option>
</select>
<span class="selectRequiredMsg"></span></span><br />
Quantity: <br />
<span id="spryselect2">
<!-- selects the quantity // onclick changes the variables specified values -->
<select name="combo1" id="combo_1" onclick="roundNumber(amount2.value, 2);roundNumberTax(tax.value, 2);roundNumberProduct(product.value, 2);roundNumberShipping(shipping.value, 2);roundNumberAmount(amount2.value, 2)" style="width:200px;">
<option selected="selected"> </option>
<option value="4">4 - $20.95</option>
</select>
<span class="selectRequiredMsg"></span></span><br />
Product: <br />
<span id="sprytextfield11">
<label>
<input type="text" name="product" id="txt_product" disabled="disabled" value="" style="width:200px;" />
</label>
</span><br />
Shipping: <br />
<span id="sprytextfield9">
<label>
<input type="text" name="shipping" id="txt_shipping" disabled="disabled" value="" style="width:200px;" />
</label>
</span><br />
Taxes: <br />
<span id="sprytextfield10">
<label>
<input type="text" name="tax" id="txt_tax" disabled="disabled" value="" style="width:200px;" />
</label>
</span><br />
Total: <span id="sprytextfield8">
<input type="hidden" name="amount" id="txt_price" value="" style="width:200px;" />
</span>
<input type="hidden" name="amount3" id="txt_price3" value="" style="width:200px;" />
<br />
<span id="sprytextfield7">
<input type="text" name="amount2" id="txt_price2" disabled="disabled" value="" style="width:200px;" />
</span></p>
<hr width="100%" />
<p>Please fill in details.</p>
<p>
<input type="hidden" name="item_name" value="TEST ITEM" />
<input type="hidden" name="button_subtype" value="products" />
<input type="hidden" name="rm" value="1" />
<input type="hidden" name="return" value="http://www.example.com/" />
<input type="hidden" name="cancel_return" value="http://www.example.com/" />
<input type="hidden" name="currency_code" value="USD" />
<input type="hidden" name="bn" value="PP-BuyNowBF:btn_buynowCC_LG.gif:NonHosted" />
<input type="hidden" name="address_override" value="1" />
<input type="hidden" name="shipping" value="0" />
<input type="hidden" name="business" value="wayne@lifelikemedia.ca" />
<input type="hidden" name="quantity" id="quantity" value="1" />
<input type="hidden" name="state" id="state" value="" />
First Name: <br />
<span id="sprytextfield1">
<input type="text" name="first_name" value="TEST" style="width:200px;" />
<span class="textfieldRequiredMsg"></span></span><br />
Last Name: <br />
<span id="sprytextfield2">
<input type="text" name="last_name" value="TEST" style="width:200px;" />
</span> <br />
Address: <br />
<span id="sprytextfield3">
<input type="text" name="address1" value="1234 TEST STREET" style="width:200px;" />
<span class="textfieldRequiredMsg"></span></span><br />
City: <br />
<span id="sprytextfield4">
<input name="city" type="text" value="Scottsdale" style="width:200px;" />
<span class="textfieldRequiredMsg"></span></span><br />
ZIP Code: <br />
<span id="sprytextfield5">
<input type="text" name="zip" value="85260" style="width:200px;" />
</span><br />
Country: <br />
<span id="sprytextfield6">
<input name="country" type="text" disabled="disabled" value="US" style="width:200px;" />
</span><br />
<br />
<span id="sprycheckbox1">
<label>
<input type="checkbox" name="replacePolicy" id="replacePolicy" />
</label>
<span class="checkboxRequiredMsg">Please read policy.</span></span> <a href="#" class="style10" onClick="window.open('replace.html','popup','width=400,height=300,scrollbars=yes,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=no,left=50,top=0'); return false">Please read policy.</a><br />
<br />
<input type="image" name="submit" border="0"
src="http://www.thinkanddone.com/finance/buynow.jpg"
alt="PayPal - The safer, easier way to pay online" />
</p>
</form></td>
</tr>
</table>
<script type="text/javascript">
var shipping = document.getElementById("txt_shipping").value;
var tax = document.getElementById("txt_tax").value;
var product = document.getElementById("txt_product").value;
// rounds total amount off
function roundNumber(rnum, rlength) { // Arguments: number to round, number of decimal places
var v1 = document.getElementById("combo_1").value, v2 = document.getElementById("combo_0").value;
var newnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
var newnumber2 = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
document.price.amount2.value = newnumber.toFixed(2); // Output the result to the form field
document.price.amount.value = (newnumber2 / v1).toFixed(2);
}
// rounds tax off
function roundNumberTax(rnum, rlength) { // Arguments: number to round, number of decimal places
var taxnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
document.price.tax.value = taxnumber.toFixed(2); // Output the result to the form field
}
// rounds product off
function roundNumberProduct(rnum, rlength) { // Arguments: number to round, number of decimal places
var productnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
document.price.product.value = productnumber.toFixed(2); // Output the result to the form field
}
// rounds shipping off
function roundNumberShipping(rnum, rlength) { // Arguments: number to round, number of decimal places
var shippingnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
document.price.shipping.value = shippingnumber.toFixed(2); // Output the result to the form field
}
// rounds paypal amount off
function roundNumberAmount(rnum, rlength) { // Arguments: number to round, number of decimal places
var amountnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
document.price.amount2.value = amountnumber.toFixed(2); // Output the result to the form field
}
window.onload = function() {
var dropChange = function() {
// Declaring variables
var v1 = document.getElementById("combo_1").value, v2 = document.getElementById("combo_0").value;
var amount3 = document.getElementById("txt_price3").value, amount = document.getElementById("txt_price").value;
document.getElementById("txt_price3").value = (amount);
document.getElementById("quantity").value = (v1);
if (v2 == 70) {
document.getElementById("state").value = ("AZ");
}
<!-- when state is selected, these calculations are done -->
if (v2 == 70) {
if (v1 == 4) {
document.getElementById("txt_price2").value = v1 * 20.95;
document.getElementById("txt_product").value = document.getElementById("txt_price2").value;
document.getElementById("txt_price2").value = document.getElementById("txt_product").value * 0.0795;
document.getElementById("txt_tax").value = document.getElementById("txt_price2").value;
document.getElementById("txt_price2").value = 12;
document.getElementById("txt_shipping").value = document.getElementById("txt_price2").value;
document.getElementById("txt_price2").value = v1 * 20.95 * 1.0795 + 12.00;
}
}
};
document.getElementById("combo_0").onchange = dropChange;
document.getElementById("combo_1").onchange = dropChange;
};
</script>
<script type="text/javascript">
<!--
var spryselect1 = new Spry.Widget.ValidationSelect("spryselect1", {validateOn:["change"]});
var spryselect2 = new Spry.Widget.ValidationSelect("spryselect2", {validateOn:["change"]});
var sprycheckbox1 = new Spry.Widget.ValidationCheckbox("sprycheckbox1", {validateOn:["change"]});
var sprytextfield6 = new Spry.Widget.ValidationTextField("sprytextfield6", "none");
var sprytextfield5 = new Spry.Widget.ValidationTextField("sprytextfield5", "zip_code", {validateOn:["change"]});
var sprytextfield4 = new Spry.Widget.ValidationTextField("sprytextfield4", "none");
var sprytextfield3 = new Spry.Widget.ValidationTextField("sprytextfield3", "none");
var sprytextfield2 = new Spry.Widget.ValidationTextField("sprytextfield2", "none");
var sprytextfield1 = new Spry.Widget.ValidationTextField("sprytextfield1", "none");
var sprytextfield7 = new Spry.Widget.ValidationTextField("sprytextfield7", "none", {validateOn:["change"]});
var sprytextfield8 = new Spry.Widget.ValidationTextField("sprytextfield8", "currency", {validateOn:["change"]});
var sprytextfield10 = new Spry.Widget.ValidationTextField("sprytextfield10");
var sprytextfield9 = new Spry.Widget.ValidationTextField("sprytextfield9");
var sprytextfield11 = new Spry.Widget.ValidationTextField("sprytextfield11");
//-->
</script>
</body>
</html>
I've started studying JavaScript recently. The following simple scenario from the Russian textbook cannot be implemented on my PC. Code: <HTML>
<HEAD>
<TITLE>Object Math Example</TITLE>
</HEAD>
<BODY>
<h1>Object Math Example</h1>
<p>Насколько случайны числа, полученные генератором случайных чисел? Подсчитаем среднее 5000 случайных чисел.</p>
<SCRIPT LANGUAGE="JavaScript">
total = 0;
for (i = 0; i<5000; i++) {
num = Math.random();
total += num;
document.status = "Generated " + i + " numbers";
}
average = total / 5000;
average = Math.round(average * 1000 / 1000);
document.write("<h2>" arithmetic mean of random numbers + average + "</h2>");
</SCRIPT>
</BODY>
</HTML>
I just typed the script char by char. I use Firefox browser, v.3.5.7. The error console does not display any mistakes. Please, explain me what is wrong in the code. Hi, I am using the below code to calculate the age of a child from DOB. Criteria is as of 09/01/2010 (for the school year 2010-11). Even though the script seems to working fine in some cases the age calculations are wrong. Can some please tell what is wrong with the code. For ex: DOB 12/20/1999 the age should be 10 as if 09/01/2010. However the age is calculated as 11 years. Code: Function Row_Inserting(rs)
If Not EW_DEBUG_ENABLED Then On Error Resume Next
DIM ChildAge, fromDate
fromDate=CDate("09/01/2010")
ChildAge = DateDiff("d",rs("DOB"),fromDate)
If ChildAge <= (Cint("1095")) Then
CancelMessage="Your child is too young to attend our classes. Please register after your child has reached pre-K."
Row_Inserting = False
Else
rs("Age")= DateDiff("YYYY",rs("DOB"),Date())
Row_Inserting = True
End If
End Function
Any pointers .. Thanks Vinny Hello, javascript seems to return the calculate the follwoing: (1 / 0.88) * 4.4 = 5.000000000000001 Excel evaluates the same sum to be 5 even to 20 decimal points. My calculator does the same. Having the 1 on the end throws off some of my calculations. Why is javascript evaluating like this?? Many thanks I am a student trying to complete this assignment. Any assistance you can give me is greatly appreciated. My code is inserted below. This is calculator program that I have gotten stuck on. Here is where I think I am at: The program is now taking the 1st number entered displaying it and storing it in the variable "memory". Operation (+,-,*,/) is added to the memory in function action1() but then when the second number is entered it replaces memory with the second number. How can I get the variable memory to the whole string of 1st number,action, 2nd number? Also once I do get that working correctly: Wouldn't eval(document.calculator.display.value= memory) in my HTML for the "=" give me the calculation. ( if I could figure out how to have memory store the 1st number and action1 and 2nd number all together) Or would eval(document.calculator.display.value) do it for me. //////////////////////////////////////////////////////////////////////////////////// <html> <head> <title> Calculator</title> </head> <script type = "text/javascript" src="calculator2.js"></script> <body> <center>Calculator<br> To use this calculator, CLICK a number, then an ACTION, then another number, then the EQUALS button. <br> Press "C" when ready to start over. <br> The "N" button makes your previous number a negative.<br></center> <form name="calculator"> <table border = "1" align ="center"> <tr> <td ><input type = "text" size = 26 name = "display" id = ""/></td> </tr> <tr ><br /> <!-- first row of calculator --> <td> <input type = "button" value = " 7 " id = "" onclick="newstring('7')"> <input type = "button" value = " 8 " id = "" onclick="newstring('8')"/> <input type = "button" value = " 9 " id = "" onclick="newstring('9')"> <input type = "button" value = " / " id = "" onclick="action1('/')"> </td> </tr> <tr ><br /> <!-- second row of calculator --> <td> <input type = "button" value = " 4 " id = "" onclick="newstring('4')"> <input type = "button" value = " 5 " id = "" onclick="newstring('5')"> <input type = "button" value = " 6 " id = "" onclick="newstring('6')"> <input type = "button" value = " * " id = "" onclick="action1('*')"> </td> </tr> <tr ><br /> <!-- third row of calculator --> <td> <input type = "button" value = " 1 " id = "" onclick="newstring('1')"> <input type = "button" value = " 2 " id = "" onclick="newstring('2')"> <input type = "button" value = " 3 " id = "" onclick="newstring('3')"> <input type = "button" value = " - " id = "" onclick="action1('-')"> </td> </tr> <tr ><br /> <!-- forth row of calculator --> <td> <input type = "button" value = " 0 " id = "" onclick="newstring('0')"> <input type = "button" value = " N " id = "" onclick="newstring('N')"> <input type = "button" value = " = " id = "" onclick="eval(document.calculator.display.value= memory)"> <input type = "button" value = " + " id = "" onclick="action1('+')"> </td> </tr> <tr ><br /> <!-- fifth row of calculator --> <td> <input type = "button" value = "   " id = ""> <input type = "button" value = "   " id = ""> <input type = "button" value = "   " id = ""> <input type = "button" value = " C " id = "" onclick="clearCalc()"> </td> </tr> </table> </body> </form> </html> /////////////////////////////////////////////////////////////////////////////////////// javascript memory = "0"; current = 0; operation =0; function newstring(digit) { current=document.calculator.display.value; if (digit >= 0 && digit <=9) { if(current==0) { current = digit; } else { current = current + digit; } } document.calculator.display.value=current; memory= current; } function action1(newaction) { operation = document.calculator.display.value; if (newaction == '+') { operation = newaction; } else if (newaction == '-') { operation = newaction; } else if (newaction == '*') { operation = newaction; } else if (newaction == '/') { operation = newaction; } memory= memory + operation; document.calculator.display.value=memory ; } function clearCalc() { document.calculator.display.value=null; num1= null; num2 = null; lastaction= null; action = null; } |
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