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JavaScript - Urgent Help Needed With Implement A Method In A Loop
Friends i'm in a dire situation only have wednesday to submit ..so heres the problem....i have a course work assigment where i have to hardwire Hardware items and their item codes description and prices and ask the user to input their name address the itemCode and quantity nad then creat an invoice which looks like this
HARDWARE ITEMS CODE DESCRIPTION UNIT PRICE K16 Wood screws, brass, 20mm, pack of 50 $ 7.75 D24 Wood glue, clear, 1 litre $ 5.50 M93 Sandpaper, medium grade, 100 sheets $10.25 M94 Sandpaper, fine grade, 100 sheets $14.75 PLACE YOUR ORDER! NAME: Bill Silic ADDRESS-1: Apt 23 ADDRESS-2: Building 8 ADDRESS-3: Winchester POST CODE: 89763 ENTER CODE (XX to Stop): CODE: D24 QUANTITY: 2 CODE: K16 QUANTITY: 1 CODE:XX INVOICE FOR ORDER Bill Silic Apt 23 Building 8 Winchester POST CODE: 89763 D24 Wood glue, clear, 1 litre 2 @ $ 5.50 $ 11.00 K16 Wood screws, brass, 20mm, pack of 50 1 @ $ 7.75 $ 7.75 TOTAL: $ 18.75 Shipping: 2 items @ 1.00 2.00 TOTAL INCL. SHIPPING: 20.75 VAT at 20% 4.15 TOTAL TO PAY: 24.90 I HAVE ALREADY COMPLETED THIS BY MYSELF AND GOT IT WORKING WITH NO PROBLEM ..But my problem is that the teacher wants us to TEST FOR NULL ENTRY meaning if the user enters the wrong Itemcode or no ItemCode at all and give an sensible output for that case ..... she wants us to put it in a method after main and then call it in main using a do while loop so my method looks something like this Code: public static boolean isSomethingCorrect(String itemCode){
if(itemCode.equals("")||itemCode.equals(null)){
System.out.println("A sensible output");
return true;
}//close if
return false;
}
}
// and i have to implement it where i ask the user for input using a Do while loop in this area Code: //a do while loop to test null code entry
do{
System.out.println("Please select a code from the list");
String itemCode= br.readLine();
System.out.println("Please enter quantity of items " +itemCode);
String itemQuantity= br.readLine();
int quantity= Integer.parseInt(itemQuantity);
// I Will be forever grateful for any help on this program because i have tryed for hours upon hours and i just cant get it and i need to submit the day after tomorrow Similar TutorialsHi I'm trying to download the security image from this site (at the bottom): http://pacesalsa.promotionexpert.com...2/register.jsp However, every time one refreshes the image, the image changes (obviously). So, I'm trying to figure out how to download the current image on the page to a jpg or png (or any image file type). Could someone please tell me how to do this? Thanks. I want to insert image instead of those empty boxes.......can someone help me please...... <script type="text/javascript"> document.write("<html><head><title>My PhotoCollage</title></head><body>"); function makeDiv() { var r = Math.floor(Math.random()*256); var g = Math.floor(Math.random()*256); var b = Math.floor(Math.random()*256); var wh = 25 + Math.floor(Math.random()*444); var lr = (Math.random()<.5) ? "top":"right"; var bw = 1 + Math.floor(Math.random()*12); var bs = (Math.random()<.5) ? " solid":"dotted"; var dc = (Math.random()<.5) ? "Dog" : "Cat"; var Img = Math.floor(Math.random()*256); document.write("<div style=\"float: "+lr+";"+ "width: "+wh+"px;"+ "height: "+wh+"px;"+ "border: rgb(" + g + "," + b + "," + r + ") "+bw+"px "+bs+";"+ "background-color: rgb(" + r + "," + g + "," + b + ");"+ "image: "\">"+dc+ "</div>"); } var i; var count = Math.floor(Math.random()*100) + 5; for (i=0; i<count; i++) makeDiv(); document.write("</body></html>"); </script> I have been trying for hours to do the following: - Change the background of a div by clicking a link from another div tag. - It also needs to change back when clicked again. I know there are alot of experienced coders out there and I'm eager to learn... help would be appreciated! I tried to write the variable my_var into a text file but it only shows null after executing the code. Can anybody help pls?? Below is my code <html> <head> <script language="javascript"> var my_var function WriteToFile() { my_var = 123; document.write(<?php $file="file.txt"; $fh = fopen($file, 'w') or die("can't open file"); ?>; document.write(<?php $stringData = my_var ?>; document.write(<?php fwrite($fh, $stringData); ?>; document.write(<?php fclose($fh); ?>; } </script> </head> <body onLoad="WriteToFile();"> <p>Hello World</p> </body> </html> I need some help for University cousework that has been sent and I hope someone here can help. I need to create a cookie (easy enough) and then populate that cookie with a word that is selected when you click a certain image. Imagine you have image1.jpg and image2.jpg when a user selects image1.jpg the cookie needs to store image1 and load page2.html If the user selects image2, then page2.html still needs to load but store the word image2 in the cookie. On the next page, the cookie is loaded and the page needs to load the css file associated with that word example: image1 = firstcss.css image2 = secondcss.css Is this possible? Thank you for all your help Hi everyone, im no expert in coding but i manage to get this bit of code together using some free source stuff and put in the links to my images ect, the problem now is i need each picture to be different sizes and each one to have a clickable link but i am completely stumped heres the code Code: <html>
<head>
<script type="text/javascript">
<!--
var image1=new Image()
image1.src="http://gohelp.org.uk/wp-content/uploads/2011/05/Charity-Rallies-World.png"
var image2=new Image()
image2.src="http://gohelp.org.uk/wp-content/uploads/2011/05/ROTW-logo.jpg"
var image3=new Image()
image3.src="http://gohelp.org.uk/wp-content/uploads/2011/05/Mongolia-Charity-Rally-Logo-Transparent.png"
//-->
</script>
</head>
<body>
<center><img src="http://gohelp.org.uk/wp-content/uploads/2011/05/Charity-Rallies-World.png" name="slide" width="150" height="68" /></center>
<script>
<!--
//variable that will increment through the images
var step=1
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.images.slide.src=eval("image"+step+".src")
if (step<3)
step++
else
step=1
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
slideit()
//-->
</script>
</body>
</html>
Hi I have been trying to create a form using Django for a very long time but have not been able to get it to look the way I want. Someone suggested to me that I should use Javascript (Jquery) to do this. Here's what I want to do. For the form I want, there are certain statuses at the bottom, like "Done", "Incomplete" and etc. When the form is filled in, the person will click on one of these statuses. What I want this button to do is to save the page/form and also to generate a few new links relating to the status selected. For example, if the person selects "Done" this should save the form and generate two new buttons. One that says "Close" which would take you to the home page, and one that says "Continue" which would take you to the next form. My problem is that I'm new to Django and have no experience with Javascript. So if anyone could help or give me hints that would be greatly appreciated. hi i am trying to populate a textarea with the selections like checkboxes radiobuttons textbox combobox but i cant seem to do so. i am naive to the field of programing, and found a few code snippets to do so i tried but it did no good... help needed this is my code " <html> <head> <style type="text/css"> .minitext { font: normal 0.7em Arial, sans-serif; color: Black; } .disable { background-color: #CF110C; color: #fff; font-weight: bold; padding: 5px; } </style> <script language="Javascript" type="text/javascript"> function populateTextArea(){ var output = new Array(); var fieldID = 1; while (fieldObj = document.MyForm['iid'+fieldID]) { if (fieldObj.length) { for (var j=0; j<fieldObj.length; j++) { if (fieldObj[j].checked) { output[output.length] = fieldObj[j].value;} }//end of for } //end of if else { if (fieldObj.checked) { output[output.length] = fieldObj.value; } }//end of else fieldID++; }// end of while document.getElementById('targetarea').value = output.join(', '); //document.MyForm.targetarea.value = document.MyForm.ip1.value + '\n' + document.MyForm.ip2.value + '\n' + document.MyForm.ip3.value ; } </script> </head> <body> <br> <br> <form name="MyForm" method="POST" action="#"> String 1: <input type="text" name="ip1" value=""><br> String 2: <input type="text" name="ip2" value=""><br> String 3: <input type="text" name="ip3" value=""><br><br> <input type="checkbox" name="iid1" id="pe_item2" value="Text string 1"> Text string <input type="checkbox" name="iid1" id="pe_item2" value="Text string 12"> Text string 1<br><br><br> <input type="radio" name="iid2" id="pe_item4" value="Text string 2">Text string 2 <input type="radio" name="iid2" id="pe_item6" value="Text string 3">Text string 3<br> <input type="radio" name="iid3" id="pe_item8" value="Text string 4">Text string 4 <input type="radio" name="iid3" id="pe_item10" value="Text string 5">Text string 5<br> <input type="radio" name="iid4" id="pe_item12" value="Text string 6">Text string 6 <input type="radio" name="iid4" id="pe_item14" value="Text string 7">Text string 7<br> <br> <br> <a href="#" onClick="document.MyForm.targetarea.value = document.MyForm.ip1.value + '\n' + document.MyForm.ip2.value + '\n' + document.MyForm.ip3.value + populateTextArea();" >Populate</a><br> <br> <INPUT TYPE=BUTTON VALUE="Co" ONCLICK= populateTextArea(); > <br> <textarea id="targetarea" name ="targetarea" cols="50" rows="5"></textarea> </form> </body> </html> " help need this done urgently Hi Guys, Im in need of some help with regards to forms. I am looking to build as basic as possible, a form that has 3 select dropdowns that have predetermined options. The user will select the first option and based on that option the second will populate and based on that, the third one will give the last option. Now, when the last one is selected, i need a div or a paragraph displaying information to be displayed. So here's the framework. Option 1 = fruit or vegitables of which fruit is selected is selected by the user Option 2 = Apples, Grapes, and pears of which apples is then selected Option 3 = Red, Green and Yellow of which Green is selected. Once green is selected, I need a description about the green aple to be displayed. Can anyone help me out on this? I am not sure where to begin and my boss is adament it must be done like yesterday. Ay help will be appreciated. Thanks. The following code results in the exact same output. Is there an advantage to using i++ over ++i (or visa-versa) in the loop? Code: <script type="text/javascript">
var tarr1 = []; for (var i=0; i<10; i++) { tarr1.push(i); }
var tarr2 = []; for (var i=0; i<10; ++i) { tarr2.push(i); }
alert(tarr1.join(',')+'\n'+tarr2.join(','));
</script>
Similar question for the increment method in the following: Code: <script type="text/javascript">
var tarr1 = []; var i=0; do { tarr1.push(i); i++; } while (i<10);
var tarr2 = []; var j=0; do { tarr2.push(j); ++j; } while (j<10);
alert(tarr1.join(',')+'\n'+tarr2.join(','));
</script>
After struggling with this for the past 2 days, I've decided it is time to seek out some help. The program is a calculator to show the monthly payments required depending on if the terms are for 2, 3, 4, or 5 year financing. I have the following 4 variables that I need to be placed in the inner loop, but not sure how to do it. pay24, pay36, pay48, pay60 The following loop creates a 4 row x 2 column table which I need it to do, but the inner loop needs to show the value of the 4 variables above. Can someone assist me in this problem? Code: for ( var i=24; i<=60; i+=12 ) {
document.write("<tr>");
document.write("<td align=center>" + i + "</td>");
for ( var j = 2; j <= 2; j++ ) {
document.write("<td align=right>" + j + "</td>");
}
document.write("</tr>");
}
Hello All, I have made the below code but i want to add something extra to it. I have tried to do it several times already but the code just seems to stop working What i need it to do is to keep asking the user to enter the CD Title and CD Cost repeatedly and to total all the CD Costs together. <html> <body> <script language='JavaScript'> //set the language a=(prompt('please enter the CD Title:',0)); // enter the cd title promt b=parseFloat(prompt('please enter the CD Cost:',0)); // enter the cd cost promt document.writeln(' your CD Title is: <b>' + a + '</b>'); //write the cd title to the screen in bold document.writeln(' your CD Cost is: <b>' + b + '</b>'); //write the cd cost to the screen </script> </body> </html> E.g. Customer wants to buy X CD's. The prompt will appear X times untill the customer has no more CD's they want to buy All the CD Titles & CD Costs should be written to the screen With Total End Product: your CD Title is: RnB Classic Vol 1 your CD Cost is: 1.00 your CD Title is: RnB Classic Vol 2 your CD Cost is: 1.00 your CD Title is: RnB Classic Vol 3 your CD Cost is: 1.00 Total Cost 3.00 Can anyone help? Why is the callwhy is the slice method only a method of an Array instance? The reason why I ask is because if you want to use it for the arguments property of function object, or a string, or an object, or a number instance, you are forced to use Array.prototype.slice.call(). And by doing that, you can pass in any type of object instance (Array, Number, String, Object) into it. So why not just default it as a method of all object instances built into the language? In other words, instead of doing this: Code: function Core(){
var obj = {a : 'a', b : 'b'};
var num = 1;
var string = 'aff';
console.log(typeof arguments);//Object
console.log(arguments instanceof Array);//false
var args1 = Array.prototype.slice.call(arguments);
console.log(args1);
var args2 = Array.prototype.slice.call(obj);
console.log(args2);
var args3 = Array.prototype.slice.call(num);
console.log(args3);
var args4 = Array.prototype.slice.call(string);
console.log(args4);
Core('dom','event','ajax');
Why not just be able to do this: Code: function Core(){
var obj = {a : 'a', b : 'b'};
var num = 1;
var string = 'aff';
var args = arguments.slice(0);
var args2 = obj.slice(0);
var args3 = num.slice(0);
var args4 = string.slice(0);
//right now none of the above would work but it's more convenient than using the call alternative.
}
Core('dom','event','ajax');
Why did the designers of the javascript scripting language make this decision? Thanks for response. I'm running into issues while trying to make some simple code to loop through and display different combinations of 3 colours. I want to show 3 boxes on screen and then loop through/increment each possible combination of colours. For simplicity's sake I'm trying to go from black to white in each box like this: (box1rgb/box2rgb/box3rgb) step 1: 000 000 000 step 2: 000 000 111 step 3: 000 000 222 . . . step 256: 000 000 255255255 step 257: 000 111 000 step 258: 000 111 111 step 259: 000 111 222 . . . step 512: 000 111 255255255 step 513: 000 222 000 step 514: 000 222 111 . etc. Yes, I know the thing will take a long time to complete! The colour is being set by the statement document.getElementById("box#").style.backgroundColor = "rgb(" + p1 + "," + p1 + "," + p1 + ")"; where p1 is the incrementing variable. Firstly I tried to do it using nested "for" loops. Code: for (p3=0;p3<=255;p3++) {
document.getElementById("box03").style.backgroundColor = "rgb(" + p3 + "," + p3 + "," + p3 + ")";
for (p2=0;p2<=255;p2++) {
document.getElementById("box02").style.backgroundColor = "rgb(" + p2 + "," + p2 + "," + p2 + ")";
for (p1=0;p1<=255;p1++) {
document.getElementById("box01").style.backgroundColor = "rgb(" + p1 + "," + p1 + "," + p1 + ")";
}
}
}
But of course the code executes far too rapidly for each combination to be seen. It all chewed up lots of CPU and nothing was smooth. To slow the process, I tried a single recursive loop using a timeout statement: Code: function loopandshow() {
document.getElementById("box01").style.backgroundColor = "rgb(" + currentcolour + "," + currentcolour + "," + currentcolour + ")";
currentcolour += 1;
if (currentcolour <= 255) window.setTimeout("loopandshow();", 20);
}
This worked smoothly for a single box but I couldn't work out how to nest this format 3 levels deep and have each level increment only when the deeper level had completed the cycle. Any advice would be gratefully appreciated. Thanks in advance. I have a parent checkbox that when checked, I want it to validate whether 1 of the four child checkboxes are selected. I've gotten it to work but I'd like to have one if condition as opposed to all the '&&'. Anyone know how to clean these up? Code: <script type="text/javascript">
function checkMe() {
var mbe = document.getElementById('a10_Class01');
if (mbe.checked) {
for (i=0; i<4; i++){
if (document.getElementById('a10_ClassSub1').checked == false && document.getElementById('a10_ClassSub2').checked == false && document.getElementById('a10_ClassSub3').checked == false && document.getElementById('a10_ClassSub4').checked == false){
alert('Choose a minority.');
return false;
}
}
}
}
</script>
Hi everybody, I have written a javascript slideshow with pause-play-next-previous buttons, but the images are too many and users have to wait too long especially with slower connections - i wonder if anybody can suggest a way to implement the script with fast preloading of the first few images, increment preloading or a similar trick. I will copy my code below but i also copy first this link: http://www.javascriptkit.com/script/...entslide.shtml which is an example of increment loading slideshow working fine! my problem is i am quite new to javascript and i wouldnt know how to customize it in order to take away the link function, that i dont need, and add captions and buttons etc. Any advice in one of the two directions (working on my own script below or customizing the linked one above) would be very very appreciated! Also alternative ideas (i.e. some solutions using pure CSS) are welcome! I do know some jquery plugin could do but i am trying to go more into the code, even though i still need a lot of advices and tutorials, the goal is solving this specific problem but also learning! Thx a lot in advance. Here my code (just 2 images here in the list to make it shorter for you, the complete list is more than 50 pics!): Code: <script language="JavaScript">
<!--
var interval = 8000;
var random_display = 0;
var imageDir = "portraits/";
var imageNum = 0;
didascalieArray = new Array();
imageArray = new Array();
didascalieArray[imageNum] = "caption1";
imageArray[imageNum++] = new imageItem(imageDir +
"image1.jpg");
didascalieArray[imageNum] = "caption2";
imageArray[imageNum++] = new imageItem(imageDir +
"image2.jpg");
var totalImages = imageArray.length;
function imageItem(image_location) {
this.image_item = new Image();
this.image_item.src = image_location;
}
function get_ImageItemLocation(imageObj) {
return(imageObj.image_item.src)
}
function getNextImage() {
if (random_display) {
imageNum = randNum(0, totalImages-1);
}
else {
imageNum = (imageNum+1) % totalImages;
}
var new_image = get_ImageItemLocation(imageArray
[imageNum]);
document.getElementById("didascalia").innerHTML =
didascalieArray[imageNum];
return(new_image);
}
function getPrevImage() {
if(imageNum-1 < 0) {
imageNum = totalImages-1;
}
else
imageNum = (imageNum-1) % totalImages;
var new_image = get_ImageItemLocation(imageArray
[imageNum]);
document.getElementById("didascalia").innerHTML =
didascalieArray[imageNum];
return(new_image);
}
function prevImage(place) {
var new_image = getPrevImage();
document[place].src = new_image;
}
function switchImage(place) {
var new_image = getNextImage();
document[place].src = new_image;
var recur_call = "switchImage('"+place+"')";
timerID = setTimeout(recur_call, interval);
}
// -->
</script>
I am trying to code a piece of JavaScript that queries the Internic for whois information (using either a domain or an IP address) and puts the results into a JSON object with separate fields for each piece of information.
I have a main window which produces a number of child windows when I press a button. Users need to be able to switch between windows using Ctrl+Tab hot key. I was trying to implement this by intercepting keyup/keydown events in one of the frames. But the problem is that main window has several frames and I don't have access to all of them because some of them are in different domains. As soon as a user clicks on a frame without my handler the hot key is not working anymore. Any ideas how to implement it? Maybe an ActiveX component? If ActiveX could help me - how does it work? Are there any tutorials or examples how to write an activeX to intercepts hot keys in IE? Thank you. Hi, I got this two javascripts: - Datepicker by Jason Moon (http://calendar.moonscript.com/dateinput.cfm) which can have multiple of this datepicker on a single form - Dynamic Add/Remove rows from http://viralpatel.net/blogs/2009/03/...avascript.html I would like to add rows of fields with each rows having it's individual datepicker. Code: <table id="billcmp_7" width="320" border="0">
<tr>
<td width="200" align="center"><script>DateInput('billcmp7_cycle', true)</script></td>
<td width="10"> </td>
<td width="100" align="center"><input name="billcmp7_name" type="text" /></td>
<td width="10"><INPUT type="checkbox" name="chk"/></td>
</tr>
</table>
<table width="320" border="0">
<tr>
<td colspan="4" align="center"><INPUT type="button" value="Add Row" onclick="addRow('billcmp_7')" /><INPUT type="button" value="Delete Row" onclick="deleteRow('billcmp_7')" /></td>
</tr>
</table>
I just want this section Code: <script>DateInput('billcmp7_cycle', true)</script>
to work like Code: <script>DateInput('billcmp7_cycle_1', false)</script>
<script>DateInput('billcmp7_cycle_2', false)</script>
when click on the add button. Here's what i meant? Link cant get the time to be different as it is still read as single datepicker. Any1 has any idea how or any alternative? I have implemented timer for 10sec.It's displaying the message.Now After pressing OK button that is after first 10 sec I want the timer to restart again and run for 20 secs and then display other message.After pressing OK button,that is for 20 secs I want the timer to restart again for 60 secs and display a new third message. Here is my code: Can you help me? =========================================================== <SCRIPT LANGUAGE = "JavaScript"> <!-- var secs var timerID = null var timerRunning = false var delay = 1000 function InitializeTimer() { // Set the length of the timer, in seconds if(secs = 10) { StopTheClock() StartTheTimer() secs++ } else if(secs = 15) { StopTheClock() StartTheTimer() } } function StopTheClock() { if(timerRunning) clearTimeout(timerID) timerRunning = false } function StartTheTimer() { if (secs==0) { StopTheClock() // Here's where you put something useful that's // supposed to happen after the allotted time. // For example, you could display a message: alert("Would You Like to try again?") } else { self.status = secs secs = secs - 1 timerRunning = true timerID = self.setTimeout("StartTheTimer()", delay) } } //--> </SCRIPT> Here is how I'm calling it: <FORM> <INPUT TYPE=BUTTON VALUE="Submit" onClick = "InitializeTimer()"> </FORM> Please help! |
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