Help With 'return' Statement In Functions

Feb 4, 2006

I have the following script:

function myFunc() {
// some code to do with AJAX
http_request.onreadystatechange = function() {
// do some things
return "a string";
}

}

alert(myFunc());

However, when I return "a string"; I want that string to be returned by myFunc() (and therefore alert'ed). What seems to be happening is that the string is being returned by the http_request.onreadystatechange = function() { } function, and myFunc() just returns false. How can I make the string be returned by myFunc()?

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Cant Get To Return A True Statement At All?

Mar 17, 2009

I dont present this information right, Im trying to make the most basic array, where if the objects in the array are found I need to return a true false statement. I cant get it to return a True Statement at all. Here is my code.

var GROUPTAGS =new Array("HOT","Hot","hot","H.O.T");
var TEST1 = "APB-HOT";
CHECK_FOR_TAGS_1 = TEST1;
for(var i in GROUPTAGS)

[Code]...

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Jun 29, 2011

I have a desire to include more than one return statement in a function I have written so that when it has found the solution to a hit-testing series of conditionals, it returns the solution. The desire is to avoid further hit-tests when solution has been found. I've always felt that more than one return statement in a function is poor style, since it may lead to false execution of a function - by way of a later code edits - making a mistake by forgetting the multiple returns. My function is short and maybe the optimisation exists only in my head but are there serious reasons why one should not have more than return statement? This JS code executes in the Quartz Composer framework and has nothing to do with we programming (context (-:)

Here it is with three returns, it 'works' and I could replace all the break statements with return statements to finish optimizing:
//Test for y inside range for all quads ( Quad is defined by 4 points in a row in the list is a quad ie. list[0-3], list[4-8],
//Test along the unit numerals (_N) and also the 'Revert Patch' button
if (y >a[0]["Y"] && y <a[2]["Y"]) {
for (i=0; i <37; i+=4) {
//Log("DDDDDDD "+i+" X:"+x+" Y:"+y); .....

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Sep 11, 2010

Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

[code]....

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Nov 7, 2009

What is return statemen? what is functionn statement ? how can i write my frist program through return statement?

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Mar 10, 2010

I've got an annoying non-working bit of code:

<div id ="messageDiv" style="display:block;">No profile information entered yet</div>
<script type="text/javascript">
function profileInfo() {
var m1 = document.getElementById("marital1").innerHTML.toLowerCase();
var b1 = document.getElementById("bodytype1").innerHTML.toLowerCase();
[Code]...

The first part up to before the 'else if' works. but if the 'w1' has [URL] it still doesnt return true and display the DIV block??

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Feb 27, 2006

I'm having a problem. I was able to get the edit working fine. I was able to get it to hide the current div and go to a different div. When I combine the two, the edit works but I cannot go to the different div.

I'm thinking something is missing here?

function goto_testDiv()
{
return formCheck(this);
document.getElementById('startDiv').style.display = 'none'
document.getElementById('testDiv').style.display = 'block'
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Apr 29, 2004

PHP Code:

function mnu() {

var thismenu=this;

var mDiv = document.createElement("div");

mDiv.getVisibility=function() { thismenu.getVisibility(this); }

alert(mDiv.getVisibility());

document.body.appendChild(mDiv);

}

mnu.prototype.getVisibility=function(div) {
if (div.style.visibility=='none' || div.style.visibility=='hidden') {
    return 'hidden'
    }
else {
    return 'visible'
    }
}


so i attach a function to mDiv, which (should) return visible or hidden, but it doesn't, i get an undefined

but when i put alert boxes in the function itself (in the if-clause), it gives me the correct values....

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Mar 2, 2011

I'm looking at Doug Crockford's Javascript translations of Scheme functions at:[url]

I'm really confused by the variable declaration:

There's no quotes around the value, so what is it?

I played around with it in the console of my Chrome developer tools

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JQuery :: Return Value Of Nested Functions Is Always Undefined?

Jun 22, 2009

I am just trying to learn a little bit about jQuery.Now I have a problem with returning a value from a function.The following code works fine, when I tested it with alert(price) or any other way of echoing the value directly. But if I try something like var test = getPrice(324), the variable test would always be undefined.

function getPrice(id)
{
$.get('db.xml', function(d){[code]....

I assume that the nested functions are part of the problem,

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Jun 14, 2011

Why do we place 'return false;' at the end of jquery functions?

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Jun 20, 2011

I found this script for a navigation fade-in/fade-out and I want to modify it so it'll only trigger the fade-in/fade-out functions of the span class is NOT set to active. Here is the javascript:

Code:
$(function() {
$("#nav ul#menu li span.active").css("opacity","1");
$("#nav ul#menu li span.active").hover("opacity","1");[code].....

It's the part of the code beneath the comment CONDITIONALS BELOW that I want to be able to only trigger it if span is not set to class .active.

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Apr 4, 2011

my webstie allows users to change the color of the background, so to keep the text readable I have it changing as well.the color picker I am using has text boxes with rgb values 0-255 for each.I am trying to get one bit of text to alternate between red and blue with the conditions

Code:
if(blue>green && blue>red)
{

[code]....

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Jun 3, 2010

All is on the title, sorry for my english, i'm french :) I have an html page with style

<style>
#mydiv {
margin-left:auto;
margin-right:auto;
width:250px;
}
</style>

with jquery, i try to get the margin-left ($('#mydiv').css('margin-left'), but the function return 0px, unable to retrieve the good value (auto) anyone has idea to retrieve the value "auto" when margin-left is "auto" ?

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Aug 20, 2009

I have written a number of functions designed to return frequency data on 1000 randomly chosen numbers using different math functions for the rounding. I would like to include all of these functions within the wrapper of another function so that only one call is needed to get returns from all of the 'inner' functions. However, while each of the functions works in isolation, the moment I wrap them in another function they stop working. :confused:

The following code is one of the functions 'frequencyWrapperOne' that has been wrapped in the function 'testWrapper'. A call to testWrapper does nothing.

function testWrapper()
{
function frequencyWrapperOne()
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[Code]....

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Apr 23, 2011

$(something).split(something),this is a function with a function as a property for that function.

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Jan 27, 2011

I have several form in my site, that validate on onsubmit.I call all the validation functions from a file call functions.js.Here is a sample of the code that is working:

<form name="contact" action="contact-insert.php method="post" onSubmit="return checkform()">
<label class='SubHeadlbl' for='TextField1'><?php echo IDS_EFORMNAME?><br></label>
<input type='text' name='dfname' class='text_field' id='dfname1' size='70' maxlength='40'/>
</form>

all the other forms are not working. all have the same structure:

<form name="frm1000" action="frm1000-insert.php method="post" onSubmit="return checkform1000()">
<label class='SubHeadlbl' for='TextField1'><?php echo IDS_EFORMNAME?><br></label>
<input type='text' name='dfname' class='text_field' id='dfname1000' size='46' maxlength='40'/>
</form>

I don't know what is happening only one for work all the others don't.

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May 12, 2007

I am reading the ECMAScript specs trying to figure out if the next
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I think the above code may only be legal as an expression and not as a
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Douglas Crockford's JSLint will choke on the above line of code and
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The time I have used a line like the above is when the constructor has
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Any ideas what is right or wrong in this case?

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Jul 23, 2007

I have several text fields on page that I would like to make calculations based on if there is a number input in one of the fields.
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Now, how do I write the code for this to occur? I know how to get the function to fire based on clicking a submit button, but not sure how to do it simply based on a number keyed into the one field. Is this possible and if so, how?

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Jul 23, 2005

What is the correct construct for accessing "pageYOffset" in another window?

I've tried this, but it doesn't work:

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Aug 3, 2007

It's been a while since I've worked with javascript time comparison,
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Jul 20, 2005

I remember using if statements with null in it. For example, at one
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if (value == null) {
value = "something";
}

document.write(value)

However, this script causes an error in any browser. Why can't it
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Jul 13, 2010

For the following two snippets, they can all pass Firefox.However, I would like to know the rule of thumb when I have to use ; to indicate the end of

[Code]...

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Nov 14, 2011

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function generatePurchaseFields(dom) {
new Ajax.Request('/control/?page=tldmaxyears&domain=' + dom, {
method: 'get',

[code]....

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Nov 1, 2005

This is my first time using the switch statement. I would appreciate your suggestion on how to do this properly. I am trying to get customer age which is (age) and compare it with the monthly rate then the text msg will display in the textarea. Also, I am having trouble figuring out how I can defined my monthlyRate in the switch or do I need to this outside of the switch? Code:
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i have the following:

a1="asdf"

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