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JavaScript - Simple Javascript Help For Nooby Guy
Hi,
Am new to this forum and even newer to java. I was trying to make a simple code for a form calculation, as always i end up failing Can any one tell me where i went wrong with this script? JAVA Script Code: function meldCalc(form) {
var PBil = form.PBil.value;
var PINR = form.PINR.value;
var PCr = form.PCr.value;
if (!checkNum(PBil,"serum bilirubin")) {
form.PBil.select();
form.PBil.focus();
return false
}
if (!checkNum(PINR,"blood inr")) {
form.PINR.focus();
form.PINR.select();
return false
}
if (!checkNum(PCr,"plasma creatinine")) {
form.PCr.select();
form.PCr.focus();
return false
}
var meld = (0.957 * (Pcr) + 0.378 * (PBil) + 1.120 * (PINR) + 0.643 ) * 10;
form.meld.value = meld;
return true;
}
HTML CODE Code: <form name="meld" method=post> <table border=0 bgcolor="" cellspacing=0 cellpadding=3> <tr> <th align=left class=tdtext> Bilirubin: </th> <td> </td> </tr> <tr> <td align=right class=tdtext> Serum (P<sub>Bil</sub>): </td> <td align=left class=tdtext> <input type=text value="" size="4" maxlength="4" name="PBil"> mg/dL </td> </tr> <tr> <th align=left class=tdtext> INR: </th> <td> </td> </tr> <tr> <td align=right class=tdtext> Blood (P<sub>INR</sub>): </td> <td align=left class=tdtext> <input type=text value="" size="4" maxlength="4" name="PINR"> Number </td> </tr> <tr bgcolor=""> <th align=left class=tdtext> Creatinine: </th> <td> </td> </tr> <tr bgcolor=""> <td align=right class=tdtext> Serum (P<sub>Cr</sub>): </td> <td align=left class=tdtext> <input type=text value="" size="4" maxlength="4" name="PCr"> mg/dl </td> </tr> <tr bgcolor=""> <td> </td> <td align=center> <input type=button name=button value="Get MELD" onClick="meldCalc(this.form)"> </td> </tr> <tr bgcolor="#cccccc"> <th align=right class=tdtext style="font-size:0.12in;"> MELD = </th> <td align=left class=tdtext> <input type=text value="" size="3" maxlength="3" name="meld"> </td> </tr> Thx in advance for any help, Similar Tutorialshello everybody! this is my first atempt in writing javascript and i have a problem which I have no idea how to solve. I want to take the values from several dropdown forms and make some calculations whit those in order to display a number. Unfortunately the script responts in a way that i cannot identify what is happening. this is a shorten example of my script. Code:
<html>
<head>
<script type="text/javascript">
function calcul()
{
var pcno = document.plithospc.listplpc.value;
var ndno = document.plithosnd.listplnd.value;
var hotline = document.hotlform.listhotl.value;
var sumhotline = 0;
if (hotline == 2)
{
sumhotline = 8*(1+0.5*pcno) + 2*(1+0.5*ndno);
}
else if (hotline == 3)
{
sumhotline = 16*(1+0.5*pcno) + 4*(1+0.5*pcno);
}
else
{
sumhotline = 0;
}
document.write(sumhotline);
</script>
</head>
<body>
<FORM NAME="plithospc">
<SELECT NAME="listplpc">
<OPTION SELECTED="SELECTED" VALUE=0>choose one</OPTION>
<OPTION VALUE=1>-1-</OPTION>
<OPTION VALUE=2>-2-</OPTION>
<OPTION VALUE=3>-3-</OPTION>
</SELECT>
<FORM NAME="plithosnd">
<SELECT NAME="listplnd">
<OPTION SELECTED="SELECTED" VALUE=0>choose one</OPTION>
<OPTION VALUE=1>-1-</OPTION>
<OPTION VALUE=2>-2-</OPTION>
<OPTION VALUE=3>-3-</OPTION>
</SELECT>
<FORM NAME="hotlform">
<SELECT NAME="listhotl">
<OPTION SELECTED="SELECTED" VALUE=0>choose one</OPTION>
<OPTION VALUE=1>1st selection</OPTION>
<OPTION VALUE=2>second selection</OPTION>
<OPTION VALUE=3>third selection</OPTION>
</SELECT>
<button type="button" onclick="calcul()">click me</button>
</body>
does anyone knows how to fix this? thanks in advance I imagine this would be very simple for someone who knows javascript. I want to have three fields. First field is "posted speed limit", second field is "actual speed" and third field will be the output field. All the script needs to do it subtract the posted speed from the actual speed and add a ZERO to the end; which is the amount of the speeding ticket. The minimum fine is $100, however. So, 5 miles over the speed limit would be $100 (minimum value) 15 miles over the speed limit would be $150 (add a zero) 35 miles over the speed limit would be $350. etc. I know very little Javascript, if anyone could help me out with this, I'd appreciate it. Thanks, Sean i have this simple js example to click Delete Post and then give the user two options. If they click yes then they go that page...but how do i set it to where when they click cancel it goes back to "Delete Post" ??? i suck at javascript Code: <html>
<body>
<p><b>Delete Post</b></p>
<script type="text/javascript">
window.onclick=function(){
document.getElementsByTagName("p")[0].innerHTML="<b><a href='#'>Delete</a> || Cancel</b>"
}
</script>
</body>
</html>
Hello! This is my first post here. I am not a programmer and I thought you guys would be able to help me. I have this script in one of my pages. It was written by a former coworker. It worked perfectly in Firefox 3.6 but stopped working after browser upgrades. It may be a simple fix... I just don't know. Any help would be GREATLY appreciated. Here is the code in the HEAD: Code:
<script type="text/javascript">
function generateAnswer() {
//alert("answersheet");
window.open("answerSheet.html" + window.location.search);
}
</script>
And here is the code in the BODY, where the script is called: Code: <p>Generate the answer sheet for the tests you have selected: <a href="javascript:generateAnswer()">Generate</a></p> When the page runs, I can see the "Generate" link, but it takes me nowhere. Hi, I have some Javascript, what I want to hapen is, when the variables hour and randomhour are the same, the message hello is displayed. What actually happens is the message will display all the time, and dissapear when randomhour is 0. Here is my script: Code:
<script type="text/javascript">
//Gets hour and minute of day
var d = new Date();
var hour = d.getHours();
var minute = d.getMinutes();
//Generates a random hour and minute
var randomhour=Math.floor(Math.random()*24)
var randomminute=Math.floor(Math.random()*60)
document.write(hour);
document.write(minute);
document.write("----");
document.write(randomhour);
document.write(randomminute);
if (hour = randomhour)
{
document.write("<b>Hello</b>");
}
</script>
I'm trying to code a set of buttons that upon being pressed, change an image on the other side of the table in which they're located (not themselves). Is there a way to do this and if so, what would it be? So far I've been trying to use onMouseDown and changeImage with object id tags to get the effect but it's not working. Can anyone help me with doing this? I'm kinda new to JavaScript! Create an Array (list) containing 10 words. For every half second going word by word appears in a <span> element. When all the words in the list are gone through, the interval shall stop and printing "The End". Hi guys, I have this piece of php code: PHP Code: <?php $file = 'counter.txt'; $data = @file($file); $data = $data[0]; if($handle = @fopen($file, 'w')){ $data = intval($data); $data++; fwrite($handle, $data); fclose($handle); } ?> What I need to know is, can javascript activate this piece of php code with an onclick function to make it write to the txt file? I have a link that downloads a file and would like to add a little javascript onclick function to write to the text file (as in the php code above) at the same time as they download the file. I was not sure if this was possible in the same way you would do something like: window.location.href='http://www.yoursite.com'; Any help is hugly appreciated. Kind regards, paffley I'm brand new to javascript and have a simple assignment that I'm stuck on. I would appreciate any help. Here's what I want: 0:0 1:1 2:3 3:6 4:10 5:15 As you can see, I want the numbers after the colon to be a sum of the number to the left and the number above it. I can easily get the number before the colon, but not sure how to get the sum (the number after the semicolon). Here's my code so far: <html> <body> <script type="text/javascript"> N=0; while (N<=5) { document.write(+ N); N++; document.write(":"); document.write("<br />"); } </script> </body> </html> I need to use a loop, hence the "while" loop. But not sure how to set up variables to do the addition. Thanks much for any help - as you can see, I'm not a programmer. I am very new to coding. The below is an assignment for a class. It is a "game" which is supposed to do the following: When your program starts up it must display the image that will move around, a Start button, a Stop button, and a way for the user to specify an interval before a new game begins. The default interval must be 1000 msec. When the user presses Start, a new game starts and the selected image is displayed at a random place. The image must move to a new random place once per interval. If the user presses the Stop button, the image must stop moving, and a subsequent Start must start everything over from the beginning. Each time the user successfully hits the image, the program must move the image to a new random place immediately (i.e., not wait for the current interval to end). When the user has hit the image 3 times, the program must display a confirm dialog box that reports the elapsed time and that also says something like "Another game?" If the user pushes OK, that starts a new game immediately (no need to push Start again). If Cancel is pushed, the program stops. I have been working on this for hours, but it does not work properly. Obvious issues: the game starts running when the page loads, instead of when the start button is pushed. The confirm at the end does not cause a new game to start. The time/ elapsed time calculations are not functioning properly/ the elapsed time always displays as 1 sec. Code: <html>
<title> Dori's WhaM Game </title>
<head>
Stephen Salutes You
</head>
<body>
<br>
<img id="Colbert" src="StephenColbert.jpeg"
style="position:absolute; left:10px; top:85px" onClick='hit()'>
<form>
<input type=button value="Start game." onClick='newgame()'>
<input type=button value="Stop it, stop it now." onClick='clearInterval(setint_val); return true;'>
<br> Desired speed is <input type=text id=interval value="1000" size=5> msec
</form>
<script>
var hitcount= 0
var setint_val = (setInterval('moveit()', document.getElementById("interval").value));
var starttime
var endtime
function newgame() {
clearInterval(setint_val)
hitcount= 0
setInterval()
starttime=new Date().getTime()
}
function moveit() {
document.getElementById("Colbert").style.left = 800 * Math.random() + "px";
document.getElementById("Colbert").style.top = 500 * Math.random() + "px";
}
function hit() {
moveit()
clearInterval(setint_val)
setInterval()
hitcount= hitcount + 1
if (hitcount >= 3) {
clearInterval (setint_val); // clearInterval() to stop the image from moving
endtime=new Date().getTime();
alert(starttime)
alert (endtime)
// compute the elapsed time (make another call to new Date())
if (confirm("That took " + endtime-starttime+" seconds. Would you like to try again?")) {
newgame ()}
else {clearInterval (setint_val)
hitcount=0}
}}
</script>
</body>
</html>
I have a page with options, and I need to hide options unless a certain choice is selected. So say you have a select box for male and female, if they select male, I need it to show male options, and if they select female, it shows female options. How can I hide things until selected and then show the textboxes and stuff? Thank you! Hello! I have a few simple questions and I'm not having any luck with my Google searches. Any information is appreciated! Pardon my pseudo-coding... It's the simplest way to describe what I'm looking for. 1. I have a two dimentional array called List. I want to write a for loop to loop through the first dimension of the array. How is this done? Code: for (Line in List[][]) {
write ( List[Line][1] + " = " + List[Line][2] + "<br/>");
}
2. Is there a simple example of how to create and use an object with multiple properties, functions, etc? For example, the following "person" object: Code: Person as object - property FirstName as string - property LastName as string - function Name = property FirstName + " - " + property LastName - property Children[] as array of Person objects - property Gender as string - property Mate as Person object - property DOB as date 3. Can enumeration be done easily in Javascript? Code: enum StatusFlags
blank as 0
new as 1
free as 2
reserved as 4
sold as 8
endedum
enum StatusDecoration
new as "bold"
old as "normal"
free as "green"
notfree as "red"
reserved as strikethrough""
unreserved as "no-strikethrough"
sold as "italics"
unsold as "no-italics"
endenum
Thanks! I am in a basic computer science class. I have to do a simple javascript project, but some of the code isn't working. The popup works, but the button does not appear, and I cannot get my rollover image to appear. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
</head>
<h1>Money</h1>
<script>
function checkAGE(){if (!confirm
("Are you sure you want to enter? (<-- You can say whatever you want.)"))
history.go(-1);return " "}
document.writeln(checkAGE())
</script>
<script type="text/javascript">
<p>If you want to make Green, then you need to see Green!</p>
<FORM>
<INPUT type="button" value="Change to Green!" name="button3" onClick="document.bgColor='green'"> <br>
</FORM>
Rollimage = new Array()
Rollimage[0]= new Image(121,153)
Rollimage[0].src = "http://news-libraries.mit.edu/blog/wp-content/uploads/2008/01/money.jpg"
Rollimage[1] = new Image(121,153)
Rollimage[1].src = "http://encefalus.com/wp-content/uploads/2008/09/resources_money.jpg"
function SwapOut(){
document.Rupert.src = Rollimage[1].src;
return true;
}
function SwapBack(){
document.Rupert.src = Rollimage[0].src;
return true;
}
// - stop hiding -->
</SCRIPT>
</HEAD>
<BODY BGCOLOR="#FFFFFF">
<P align="center">
<A HREF="http://www.joemaller.com/"
onmouseover="SwapOut()"
onmouseout="SwapBack()">
<IMG SRC="joe_open.jpg"
NAME="Rupert"
WIDTH=121
HEIGHT=153
BORDER=0>
</A>
</P>
</body>
</html>
Hello guys, Im new to Javascript,please help me ya in my php code, I retrieve a ID value and assign to variable like below PHP Code: $id = $gettingdata['id']; and I want this id to be include together with javascript "insertsubcat" function like below Code: <a href="javascript:insertsubcat('.$ID.');"/>Click to insert this data</a>
in the javascript page, I dont know how to call back the id value and i try like code below but it doesnt work Code: function insertsubcat(data) {
var data = data.value;
.
.
.
.
}
Any idea? Thanks Azhan Malaysia I have a script that includes a JS delete function, but when I select a record and hit delete it says no record is selected. I'm sure this is a simple fix for someone in the know. Thanks in advance. Site: PHP Code: <?php require_once('auth.php'); ?> <script type="text/javascript" src="script.js"> </script> <?php include("header.php"); ?> <b><div align="right"><a href="admin-index.php">Admin</a> - <a href="adminorders.php">Orders</a> - <a href="adminmain_forum.php">Support</a> - <a href="register-form.php">Add User</a> - <a href="adminlogout.php">Logout</a></div></b><br> <b>Report Upload</b> <br>To upload reports after completion use the form below and update the order with the report URL (/reports/filename). <center><form action="./uploadadmin.php" method="post" enctype="multipart/form-data"> <p> <label for="file">Select a file:</label> <input type="file" name="userfile" id="file"> <br /> <p><button>Upload File</button> <p> </form></center> <p><b>Previous Orders</b> <br>Details of previous orders and trials are displayed below. <br><script> <!-- Hide from old browsers /****************************************** * Find In Page Script -- Submitted/revised by Alan Koontz (alankoontz@REMOVETHISyahoo.com) * Visit Dynamic Drive (http://www.dynamicdrive.com/) for full source code * This notice must stay intact for use ******************************************/ // revised by Alan Koontz -- May 2003 var TRange = null; var dupeRange = null; var TestRange = null; var win = null; // SELECTED BROWSER SNIFFER COMPONENTS DOCUMENTED AT // http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html var nom = navigator.appName.toLowerCase(); var agt = navigator.userAgent.toLowerCase(); var is_major = parseInt(navigator.appVersion); var is_minor = parseFloat(navigator.appVersion); var is_ie = (agt.indexOf("msie") != -1); var is_ie4up = (is_ie && (is_major >= 4)); var is_not_moz = (agt.indexOf('netscape')!=-1) var is_nav = (nom.indexOf('netscape')!=-1); var is_nav4 = (is_nav && (is_major == 4)); var is_mac = (agt.indexOf("mac")!=-1); var is_gecko = (agt.indexOf('gecko') != -1); var is_opera = (agt.indexOf("opera") != -1); // GECKO REVISION var is_rev=0 if (is_gecko) { temp = agt.split("rv:") is_rev = parseFloat(temp[1]) } // USE THE FOLLOWING VARIABLE TO CONFIGURE FRAMES TO SEARCH // (SELF OR CHILD FRAME) // If you want to search another frame, change from "self" to // the name of the target frame: // e.g., var frametosearch = 'main' //var frametosearch = 'main'; var frametosearch = self; function search(whichform, whichframe) { // TEST FOR IE5 FOR MAC (NO DOCUMENTATION) if (is_ie4up && is_mac) return; // TEST FOR NAV 6 (NO DOCUMENTATION) if (is_gecko && (is_rev <1)) return; // TEST FOR Opera (NO DOCUMENTATION) if (is_opera) return; // INITIALIZATIONS FOR FIND-IN-PAGE SEARCHES if(whichform.findthis.value!=null && whichform.findthis.value!='') { str = whichform.findthis.value; win = whichframe; var frameval=false; if(win!=self) { frameval=true; // this will enable Nav7 to search child frame win = parent.frames[whichframe]; } } else return; // i.e., no search string was entered var strFound; // NAVIGATOR 4 SPECIFIC CODE if(is_nav4 && (is_minor < 5)) { strFound=win.find(str); // case insensitive, forward search by default // There are 3 arguments available: // searchString: type string and it's the item to be searched // caseSensitive: boolean -- is search case sensitive? // backwards: boolean --should we also search backwards? // strFound=win.find(str, false, false) is the explicit // version of the above // The Mac version of Nav4 has wrapAround, but // cannot be specified in JS } // NAVIGATOR 7 and Mozilla rev 1+ SPECIFIC CODE (WILL NOT WORK WITH NAVIGATOR 6) if (is_gecko && (is_rev >= 1)) { if(frameval!=false) win.focus(); // force search in specified child frame strFound=win.find(str, false, false, true, false, frameval, false); // The following statement enables reversion of focus // back to the search box after each search event // allowing the user to press the ENTER key instead // of clicking the search button to continue search. // Note: tends to be buggy in Mozilla as of 1.3.1 // (see www.mozilla.org) so is excluded from users // of that browser. if (is_not_moz) whichform.findthis.focus(); // There are 7 arguments available: // searchString: type string and it's the item to be searched // caseSensitive: boolean -- is search case sensitive? // backwards: boolean --should we also search backwards? // wrapAround: boolean -- should we wrap the search? // wholeWord: boolean: should we search only for whole words // searchInFrames: boolean -- should we search in frames? // showDialog: boolean -- should we show the Find Dialog? } if (is_ie4up) { // EXPLORER-SPECIFIC CODE revised 5/21/03 if (TRange!=null) { TestRange=win.document.body.createTextRange(); if (dupeRange.inRange(TestRange)) { TRange.collapse(false); strFound=TRange.findText(str); if (strFound) { //the following line added by Mike and Susan Keenan, 7 June 2003 win.document.body.scrollTop = win.document.body.scrollTop + TRange.offsetTop; TRange.select(); } } else { TRange=win.document.body.createTextRange(); TRange.collapse(false); strFound=TRange.findText(str); if (strFound) { //the following line added by Mike and Susan Keenan, 7 June 2003 win.document.body.scrollTop = TRange.offsetTop; TRange.select(); } } } if (TRange==null || strFound==0) { TRange=win.document.body.createTextRange(); dupeRange = TRange.duplicate(); strFound=TRange.findText(str); if (strFound) { //the following line added by Mike and Susan Keenan, 7 June 2003 win.document.body.scrollTop = TRange.offsetTop; TRange.select(); } } } if (!strFound) alert ("Order '"+str+"' not found!") // string not found } // --> </script> <!-- EXAMPLE FORM OF FIND-IN-PAGE SEARCH USING SUBMIT (ALLOWING 'ENTER/RETURN' KEY PRESS EVENT) --> <center><b>Enter order number</b> <form name="form1" onSubmit="search(document.form1, frametosearch); return false"><input type="text" name="findthis" size="15" title="Press 'ALT s' after clicking submit to repeatedly search page"> <input type="submit" value="Search Orders" ACCESSKEY="s"></form></center> <br><br><table width="775" border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF"> <tr> <td> <form action="" method="post" name="" id=""> <table width="600" border="1" align="center" cellpadding="2" cellspacing="2"> <tr> <td><input name="topcheckbox" type="checkbox" class="check" id="topcheckbox" onClick="selectall();" value="ON"> Select All </td> <td colspan="4" align="center"><a href="form.php?mode=add">Add New Order</a></td> </tr> <tr> <td><strong><a href="javascript:goDel()">Delete</a></strong></td> <td><strong>Order Number</strong></td> <td><strong>Order Status</strong></td> <td><strong>Payment Status</strong></td> <td><strong>Update</strong></td> </tr> <? include("conn.php"); $sql="select sn,branchname,shortname,payment from $branch order by sn"; $result=mysql_query($sql,$connection) or die(mysql_error()); while($row=mysql_fetch_array($result)) { ?> <tr> <td><input name="<? echo $row['sn']; ?>" type="checkbox" class="check"></td> <td><? echo $row['branchname']; ?></td> <td><? echo $row['shortname']; ?></td> <td><? echo $row['payment']; ?></td> <td><a href="<? echo "form.php?sn=".$row['sn']."&mode=update"; ?>">Update</a></td> </tr> <? } ?> <tr> <td><strong><a href="javascript:goDel()">Delete</a></strong></td> <td><strong>Order Number</strong></td> <td><strong>Order Status</strong></td> <td><strong>Payment Status</strong></td> <td><strong>Update</strong></td> </tr> </table> </form></td> </tr> </table> <?php include("footer.php"); ?> JS File Code: function goDel()
{
var recslen = document.forms[0].length;
var checkboxes=""
for(i=1;i<recslen;i++)
{
if(document.forms[0].elements[i].checked==true)
checkboxes+= " " + document.forms[0].elements[i].name
}
if(checkboxes.length>0)
{
var con=confirm("Are you sure you want to delete");
if(con)
{
document.forms[0].action="delete.php?recsno="+checkboxes
document.forms[0].submit()
}
}
else
{
alert("No record is selected.")
}
}
function selectall()
{
// var formname=document.getElementById(formname);
var recslen = document.forms[0].length;
if(document.forms[0].topcheckbox.checked==true)
{
for(i=1;i<recslen;i++) {
document.forms[0].elements[i].checked=true;
}
}
else
{
for(i=1;i<recslen;i++)
document.forms[0].elements[i].checked=false;
}
}
Hi, I have just started to learn Javascript which when loaded into a safari web browser of Firefox browser just simply displays the code. I am currently using a MacBook Leopard operating system I have saved the code (corrected for mistakes, many many times) to my desktop Run my usual browser safari (and tried same with Firefox) loaded the file and all I get is a copy of the code displayed in the browser window. Javascript is enabled for both Please can you suggest some options for me to try and get the code working. All I am doing in this example is copied from a book to turn the background colour of the browser RED Thanks Tom I would like to compare my work to the work of others, can you please solve this and post your result? Declare an 8 x 8 matrix and an array of length 22. 1.- Populate the matrix. 2.- Copy the elements of the first row of the matrix, the anti-diagonal, and the last row of the matrix into the array, to form a Z shape. 3.- Sort the array. 4.- Assuming that the data in the arrays are grades, compute the average of the grades stored in the even locations of the array. 5.- Copy the array back into the matrix.(back into the Z) 6.- Print out the matrix values. Hi everyone, I am new to javascript, i have not read any books, but i am trying to figure out the language on the go. I am stuck with a simple program that i am trying to create for a class project. Any suggestions or help would much appreciated. My code is very simple in which i would like to convert a number value into different format of temperature. My code is listed below, it is not working in the browser. Help me fix it. ********************************************************* <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta content="text/html" http-equiv="Content-Type" /> <title>E6B temp conversion</title> <script type="text/javascript"> function ConvertTempToC(TempConversionC) { var temperature = TempConversionC.F.value; if (temperature.length > 0) { TempConversionC.TempC.value = Math.round(5/9 * (temperature - 32)); document.write(TempConversionC.TempC.value); } } </script> </head> <body> <b>Fahrenheit to Celsius</b> <br/> <input size="6" name="F"/> <br/> <input onclick="ConvertTempToC(this.form)" value="Calculate Celsius" type="button" name="Submit11"/> <br/> <input readonly="readonly" size="6" name="TempC"/> </body> </html> Hi there, me again, lol. I'm now working on a simple JavaScript calculator script, and here's what I have so far. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <body> <form name="Calculator"> <input type="text" name="Output" size="22"> <br/> <br/> <input name="1" type="button" value=" 1 " onClick="document.Calculator.Output.value += '1'" /> <input name="1" type="button" value=" 2 " onClick="document.Calculator.Output.value += '2'" /> <input name="1" type="button" value=" 3 " onClick="document.Calculator.Output.value += '3'" /> <input name="1" type="button" value=" 4 " onClick="document.Calculator.Output.value += '4'" /> <br/> <input name="1" type="button" value=" 5 " onClick="document.Calculator.Output.value += '5'" /> <input name="1" type="button" value=" 6 " onClick="document.Calculator.Output.value += '6'" /> <input name="1" type="button" value=" 7 " onClick="document.Calculator.Output.value += '7'" /> <input name="1" type="button" value=" 8 " onClick="document.Calculator.Output.value += '8'" /> <br/> <input name="1" type="button" value=" 9 " onClick="document.Calculator.Output.value += '9'" /> <input name="1" type="button" value=" 0 " onClick="document.Calculator.Output.value += '0'" /> <input name="1" type="button" value=" + " onClick="document.Calculator.Output.value += ' + '" /> <input name="1" type="button" value=" - " onClick="document.Calculator.Output.value += ' - '" /> <br/> <input name="1" type="button" value=" C " onClick="document.Calculator.Output.value = ''" /> <input name="1" type="button" value=" / " onClick="document.Calculator.Output.value += ' / '" /> <input name="1" type="button" value=" * " onClick="document.Calculator.Output.value += ' * '" /> <input name="1" type="button" value=" = " onClick="document.Calculator.Output.value += ' = ' + eval(Calculator.Output.value)" /> </form> </body> </html> The calculator itself is fully working functionally, feel free to test to your heart's content. :P The problem I'm having is not really a problem per se, more of a behaviour I don't want in the script. After clicking the = button and getting the results of the calculation displayed, clicking another number will just concatenate (I believe that's the right term) that to the result of the sum, and I don't want this to happen. If I've just done a calculation, I want the results of it to be cleared as soon as I hit another button. My guesses are that I would need to do this via some function activated by the = button. Is there some sort of way I can have the output of a sum cleared after a calculation has been done, so that the next calculation becomes a seperate one? If you're still not getting what I'm saying entirely, just let me know, I will try to provide screenshots. Thanks. |
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