Using Variable In A Loop?

Dec 15, 2009

I have a lot of variables (lab0, lab1, lab2, ...). How can I use these vaiable in a loop. Javascript thinks it is a variable 'labi'.

for ( var i=0;i<10; i++ )
{
f1.path.op[i].value = f1.labi.value;
}

[code]...

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Send A Loop Variable (i) To A Function Inside The Loop

Aug 4, 2011

I'm looking to send a loop variable (i) to a function inside the loop, but I can't seem to get it to use the value I want, it keeps making it a reference of i and therefore the function is always called using the last value of i rather than the one it was set with.

So if i have 5 Tabs then Tab 1, when clicked, should call DefaultTabClick(0) and so on rather than always using 4 for any of the tabs.

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Feb 10, 2010

I'm trying to make it so when you click a cell in a table it runs a function based on the value within that cell. With the current code, no matter what cell is clicked, the alert box displays the same number, which is the last number in my array. The variable, princ, is just being overwritten rather than writing code to each the cell with the proper value.

for(i=0;i<=3;i++){
document.writeln('<tr>');
document.writeln('<th>'+(periodArray[i])+'</th>');

[code]....

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Store Expression In Variable And Use It In Loop

Jan 28, 2011

The following loop works:
Code:
<html>
<body>
<script type="text/javascript">
var i=0;
for (i=0;i<=5;i++) {
document.write("The number is " + i);
document.write("<br />");
}
</script>
</body>
</html>

But the following doesn't:
Code:
<html>
<body>
<script type="text/javascript">
var i=0;
var x="i=0;i<=5;i++"
for (x){
document.write("The number is " + i);
document.write("<br />");
}
</script>
</body>
</html>
I'd just like to create a simple variable.

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Using A Loop Variable In Function Call?

Apr 6, 2011

i'm having trouble with some of my codes.i've been trying to put variables in function calls parameters, but it just does not work.
for example, if I try to do sth like this:

Code:
//a function that creates page numbers based on number of pictures that can be shown on the page
function MenuBar() {
pageSpan = [document.createElement('span')];[code]....

when i try to run it, it won't work.what i'm trying to do is that every time the loop runs, the "onclick" event of the created span will be the value of the loops "x" variable -1, and the value of x variable.meaning, for every new span, the parameters in the showImage() function are different.

Code:
pageSpan[1].onclick = function () { showImages(0, 1) };
pageSpan[2].onclick = function () { showImages(1, 2) };
pageSpan[3].onclick = function () { showImages(2, 3) };
pageSpan[4].onclick = function () { showImages(3, 4) };
pageSpan[5].onclick = function () { showImages(4, 5) };

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May 22, 2011

So i have this code

[Code]...

and what i want to happen is the variable number to update so that the user can see how many times the loop has run in real time. If you have to change the code around for it to work that is fine as i can adapt my code to it And obviously this script has no real function to it, it is just an example to show the jist of my actual code(don't think you want to look at a few hundred lines now do you)

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May 13, 2011

Trying to write a for loop up to 100 with multiples of 3 and 5; every multiple variable will need to have a name instead of a number?

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Feb 11, 2010

I am working on a project where I need to redo the same thing with new variable names

Code JavaScript:
var paper1 = new Raphael('img1', 500, 500);
c1 = paper1.rect(0, 0, 50, 20, 5);
var paper2 = new Raphael('img2', 500, 500);
c2 = paper2.rect(0, 0, 50, 20, 5);

I would like to be able to do this with a for loop. So in the above example I would want paper+i, img+i, and c+i was trying eval("paper"+i) but didn't work.

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Oct 22, 2009

I'm having some problem with return value for a function. I'm trying to access google blogger's API to display blog entries on my site. I'm doing this through JQuery and requesting a JSON response. Everything seems to work ok, but I want to access the link for the blog entry. This is a subset of the "entry" object.

It's structured like this:
Entry:
title,
content,
link:
rel,
type,
href,
rel,
type,
href,

I want to get the link where the "link.rel == "self". To do this I have to loop through the link object (5 times). The loop and conditional statement works correctly, but I can't get the variable inside this loop back to my original function.

I have this code:
$.each(data.feed.entry, function(i, entry){
$.each(entry.link, function(j, link){
if(link.rel == "self"){
var postlink = link.href;
alert("link : " + postlink);
return postlink;
}});
alert(postlink);
});

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Apr 8, 2010

I want to add 5 to the variable 'paramdatastart' each time the #btn is clicked. So when I click it first time the 'paramdatastart' will be 5 and next time it will be 10 andso onHow do I do that?

This is the code:

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Recursive Function With For Loop, For Loop Is Breaking When Calling Itself

Jan 22, 2011

I have been looking at this code for two evenings now, and rewrote it 4 times already. It started out as jQuery code and now it's just concatenating strings together.

What I'm trying to do: Build a menu/outline using unordered lists from a multidimensional array.

What is happening: Inside the buildMenuHTML function, if I call buildMenuHTML, the for loop only happens once (i.e. only for 'i' having a value of '0'.) If I comment out the call to itself, it goes through the for loop all 3 times, but obviously the submenus are not created.

Here is the test object:

test = [
{
"name" : "Menu 1",
"url" : "menu1.html",
"submenu" : [

[Code].....

'Menu 2' and 'Menu 3' don't show up! I'm sure it's something small that I'm overlooking.

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Jul 29, 2011

I have the code below, how could it be modified to loop over and over and reload the xml file each time. Flow would be: load xml, run thruogh code to display each xml node one at a time, when reach last node, start all over, reloading xml file,

[Code]...

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Mar 6, 2011

As you can see from the code and the output, it will attempt to write to the browser how many moves, but only '0'.

function rollDie()
{
return Math.floor(Math.random() * 6) + 1;
}
/*
*searches for a number in a number array.
*
*function takes two arguments[CODE]...

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Nov 12, 2010

I am doing some studying and we was to create a small loop using either the for loop, while loop or do while loop. I chose to do the for loop because it was easier to understand, but I want to know how to do the same using the while loop. Here is the for loop I have, but I cant figure out how to change to while loop.

for (var i = 0; i < 5; ++i)
{
for (var j = i; j < 5; ++j)
{

[Code]....

How do you make the same using a while loop?

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For Loop Wont Loop?

Jul 5, 2010

it wont loop,as long as you enter something in the name field it will submit. also how do i stop from submitting if all fields are not filled out?

function checkForm(form)
{
var len = form.elements.length;[code]....

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Aug 17, 2010

I am trying to declare a variable inside a function and use it later on in my code... but it just already returns white space... i.e. not variable value. I am setting it within this function:

function show_video1(){
document.getElementById('video1').style.display="block";
var video1Name = "Education World News (Part 1)";
document.getElementById('video2').style.display="none";
document.getElementById('video3').style.display="none";
document.getElementById('video4').style.display="none";
[Code]...

and trying to call it later on with this: <script type="text/javascript">document.write(video1Name)</script> It might be worth noting that each one of my 11 videos will hace a different name.

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Ok, so I've built a member search using ajax to change the results each time a filter is changed. It works great, except one minor issue that I'm struggling with...I just can't specify dynamically in the parent file that linkclass$id opens linkclasscontent$id as I don't know of any way to pass that $id variable back over to the parent.

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May 28, 2007

i'm not really sure how to explain this, since I know nothing about javascript, so i'll try and illustrate by the use of php (hope it makes sence)

I have a set of different links, like:

<a href="link.com?page=text1">text 1</a>
<a href="link.com?page=text2">text 2</a>
<a href="link.com?page=text3">text 3</a>
etc, where page is dynamic and can be anything I chose..

Another place in the same document, I echo out what the page variable is, like:

echo "$page";
so when clicking "text 1" the echo will output what i've defined the page to be, in this case "text1" ..

So I want to be able to click the links and change the output of the echo all depending on what i've defined in the link - without refreshing the page!

Is there any easy way to do this?

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Oct 13, 2009

a.) specify two parameters for the changeYear function: today and holiday.

function changeYear(today)(holiday){

b.) in the first line of the above function, use the getFullYear() date method to extract the 4-digit value from the today variable and store the value in a variable named year.

first line

c.) in the second line; use the setFullYear() date method to set the full year of the holiday date object to the value of the year variable.

second line

d.) in the third line, use a conditional operator on the year variable. The test condition is whether the value of the holiday date object is less than the today date object. If it is, this means that the event has already passed in the current year and the value of the year variable should be increased by 1.

third line

e.) in the fourth line of the function, again set the full year value of the holiday date object to the value of the year variable.

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Aug 12, 2011

Code:I am having problems with the following. I am wanting to hide <tr> in my table (employees) and only show employees that are in the selected department (selected via dropdown box).I need to set a javascript array to a php array. I am looping and assigning the array and am wanting to pass a javascript variable as the index in php array. I have marked my problem lines in red. Thanx for any help.

<script type="text/javascript" >
function display_elements()
{
var departments = new Array;

[code]....

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Dec 9, 2011

I am simply trying to use a global variable in javascript, but can only access the variable on the second call. I can't find anything that relates to this through my searches. My application is supposed to query the server for XML that tells me which years and months are available to put into combo boxes. I want to store this xml in a global variable to access it later.

[Code]....

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Dec 1, 2009

I start outside of the external JS file by: reviews.init(); reviews.initialiseContent('comment'); This loads my data and loads + sets the comment tab as default. My problem is that in the external JS file (shown below) the loadTabs variable will not allow me to pass it a variable: contentDiv.onclick = this.initialiseContent; Whenever I pass a variable here it errors, am I setting this up correctly, should I be using prototype for my this. variables? Interested to hear back on if this structure of code is the right way to go about this and also how I can pass a variable in this way :)

[Code]....

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I am trying to define a variable as follows:

var music_id = $(this).attr('id');
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I tried this code but i got an error on the it said Syntax error code...

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I have a php page in which I declared a js variable... right at the top of the page...

<script type="text/javascript">
var tester = 0;
</script>

[code]....

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Apr 26, 2011

I have a programing problem that have been around for ages. I have search on google using several expressions and words and after hours of digging i'm still unable to do it.I would like to get a value from a HTML page hosted remotely with an inconstant value. Then define this value and name as a javascript variable and apply or show in my page.P.S. Is there any way to make a domain lookup in javascript? I mean a user enters a domain and the script converts to an ip and shows to the user. If not thanks, probably it can only be done in the server side...

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