Any Differences In Loop Increment Method?

Sep 2, 2011

The following code results in the exact same output. Is there an advantage to using i++ over ++i (or visa-versa) in the loop? :confused:

<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(',')+'
'+tarr2.join(','));
</script>

Similar question for the increment method in the following:

[Code]....

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Increment Var By 1 In Loop?

Apr 6, 2009

I have a loop that is running and I am trying to increment a number by one each time. Here is what I am doing, but each time it just writes out 1 for the value.

var i=1;
Start of Loop
document.write(i);
var i=i++;
End of loop

It just writes out 1 each time though.

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Can I Increment Elements Each Loop?

Apr 15, 2011

I have written the follow code. It is meant to (when finished) output a table showing each member of the array PEOPLE. There Income ,there Tax bracket and there finally there total tax paid.The calulations in the if-else statements are correct.I have to create a loop that will go through the if else statements equal to the amount of the people in the array (This is no problem I have done this earlier)

My problem is when I try to add each element (PEOPLE) to the table or there indivual tax outcomes.Can I create a loop and increment in the elements each iteration to put on the table?(for there names) As I am not meant to store each iteration,it is to write to the table each time.This is the code I'm working on with out the loop.

<html>
<head>
<script>[code]......

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Jun 8, 2010

I do mostly PHP/mySQL development.

I put some HTML together to gather a user's language abilities. Originally it was a multi-select box that pulled a its values from a mySQL table and, upon form submit, a PHP script posted the languages selected into an array and then pushed into a mySQL table.

Then the client decided he wanted the user to enter in the number of years/months they studied each language selected. He found someone on RAC and they gave him this code below. Which works, but doesn't integrate well with my PHP-array loading code. The client paid the RAC before I was able to test.

It's actually more complicated than that (with Fluent/Passable options), but once I know how to change the loop from the increment to an array, I'll be able to solve the rest.

What's happening now is the JS is looping, creating ids, fluentLanguageTimeQuantity_0, fluentLanguageTimeQuantity_1, fluentLanguageTimeQuantity_2, etc for each selection. Instead I'd like it to create an array fluentLanguageTimeQuantity[] with the selections loaded into it.

Code:
for(var i=0; i<options.length;i++){
fluentStr +='<div class="languageOption"><label>'+options[i].value+'</label> <input type="text" size="3" maxlength="3" id="'+

[Code]....

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Dec 9, 2011

I'm trying to get a endless loop going, for example for looping continually through a group of photos. So what I have is:

$(function(){
var ima = Array("johnny_100.jpg", "beau_400.jpg", "mofat_400.jpg");
$.each(ima, function(index, val){

[Code].....

so basically how could I reset the index, or maybe there is a better way to make an endless loop?

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Feb 7, 2011

I'm familiar with Java so I shouldn't be too lost. What I'm about to do is add support for a web app from Firefox to IE that uses OpenLayers.

I've searched and found a link to this site from another thread which had a list of supported functions and what not here: [URL]

From what I've read in the last hour it seems as though I will have to use some browser sniffing (isMozilla, isIE8, etc) and have multiple conditions (if-else's) in my functions to use the proper calls. Does anyone have extra material that contains differences between IE and firefox? Someone mentioned to me that in lists IE doesn't support trailing commas but ff does..

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Jul 6, 2007

Does anyone know why the following code would work perfectly in FireFox but error out in IE7?

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var split2 = split1[1].split("/"); <-- This is the line that errors
var split3 = split2[4].split(".");
var page = split3[0];
return page;
}

The error reads:

Error: &#391;' is null or not an object.

So why does FireFox execute the code correctly and IE7 does not?

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DIV And InnerHTML Differences IE/Firefox

Mar 26, 2006

This is what im trying to achieve. At the top of my page there is some
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(in other words the tags are not rendered. You see the HTML as it
exists.) or as text (rendered HTML). Consider the following code, which
is a simplified version of the page.

<script language="javascript">
var mode = "code";
var s = "<html><head>
<style type="text/css">
My Stylesheet
</style>
<title>
MyTitle
</title>
</head>
<body>";

function ViewDoc()
{
if(mode == "code")
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else
document.getElementById("docArea").innerHTML = s;
}
function ChageMode()
{
if(mode == "code")
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else
mode == "code";
}
</script>
<HTML><BODY>
<table>
<tr>
<td>
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</tr>
</table>
<div id='docArea'/>
</BODY></HTML

The variable s contains an actual example of some HTML im trying to
load here (with the contents of the stylesheet omitted.)

Now, the following works fine in Internet Explorer. It does not work at
all in Mozilla Firefox. In firefox, for example, I have to cut out the
stylesheet, or the entire page goes fubar. Without the embedded
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Jul 26, 2006

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Mar 26, 2007

In Firefox 2, document.getElementById is returning an HTMLDivElement,
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For example:

<div id="errorTableDiv">
</div>
....

errorTableDiv = document.getElementById("errorTableDiv");
alert(errorTableDiv);
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Firefox prints HTMLDivElement and lets me appendChild() later on
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I do not understand why this happens or what the most socially
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To check the written above please use the given below code:

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May 13, 2009

I am having a problem with a script that I am writing and I believe it is centered within a piece of jQuery code. I have some code like this (simplified slightly):

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Jan 29, 2010

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Sep 11, 2010

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I figured this piece of code was a good start:

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What I need is 2 form fields, an up link, and a down link. I want the user to be able to select one of the form fields, then increment, or decrease the number in the field that has been selected by clicking one of the links. How might I do this?

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Jul 30, 2002

I have a for loop and would like to increment a variable for (let's say) 2 instead of one (++). How can I do that?

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The following is what I've written in an effort to accomplish this:

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I have a string "Slide1.jpg"

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$i=0;
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here i want to increment $i above code is not working,

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May 21, 2011

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Feb 5, 2010

The following is my javascript code to extend a form:

[Code]...

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I have modified a free JS function from here: [URL] To dynamically add text fields to the form. My work-in-progress version is here: [URL] On the form, I have a hidden text field:

[Code]...

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Feb 12, 2011

working on building a website at the moment. and i need to create a script that will increment a number by 0.01, then stop and decrease by 0.03, then increase again by one. I wrote code to increment by 0.01 continuouly but now i can't stop it. and change to decreasing

<script type = "text/javascript">
num = 0.87;
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[code]....

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How would i go about doing the following:

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May 10, 2006

Iv'e got a page that has a mass amount of input fields, all of which require
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value by 1 when clicked.

I'm using the following code, however when I click on one of the links, I
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document.forms.tmp.input_field is null or not an object.

It's as if JavaScript is not reading the parameter being passed through the
function.

Here's the code -

<html>
<head>
<script language="JavaScript">
function increment(input_field) {
document.forms.tmp.input_field.value = document.forms.tmp.input_field.value
+ 1;
document.forms.tmp.input_field.focus();
}
function decrement(input_field) {
document.forms.tmp.input_field.value =
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document.forms.tmp.input_field.focus();
}
</script>
</head>
<body>
<form name="tmp">
<p><input type="text" name="temporary" id="temporary" value="0">&nbsp;
<a href="#" onClick="javascript:increment(temporary);">+</a>&nbsp;
<a href="#" onClick="javascript:decrement(temporary);">-</a></p>
</form>
</body>
</html>

Any help would be appreciated. I just can't seem to see the problem...

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