Passed Variables In <SELECT>

Jul 20, 2005

I have a problem with the following code. It generates a
<FORM><SELECT><OPTION> list. There is no problem in the generating. The
problem is in the execution as follows.

It works fine in Mac IE with and without the <FORM></FORM>.

In Mac Netscape 6 the onChange does not activate if there is no
<FORM></FORM>. When I put it in a form as indicated below the value of
train.options.value is undefined. What am I doing wrong?

As I said there is no problem in IE and mayby other browsers. It may be
just a Mac Netscape 6 problem. Code:

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Oct 5, 2006

I have used PHP to send a variable in the url and I then need to use Javascript to send it on again. How would I pick up the variable? It is passeed as var=x. I am fairly sure I know how to pass it on I jsut need to get this value into a variable.

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Nov 8, 2010

The problem I am having is when the following script is executed within my page and the user submits the form, the variables passed to the GET array are duplicated only for the inputs created by my script. I have other inputs in the form that are created within the HTML of the page that work fine (i.e. they only try to pass their value once) but I cannot get my script to work properly.

Here is my script:

Here is an example of what the url looks like after the form containing this script has been submitted:

The input (segments) created in my page only submits itself once, while anything created by the script (segment_type_1, segment_type_2, etc.) submits itself twice with the second, blank value overriding the first, correct value.

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Oct 11, 2010

I'm trying to reuse a script I have but, I'm not able to due to the fact I can't use some variables in a function.

I would like to know why I am not able to use passed variables in javascript.

For example: I call a function submit_data( 'newDomainForm', 'add_domain', 'list_div' ), in the function itself I would like to use the form name (first variable passed) as document.form.domain_name.value.

Later on I would like to use the div id: list_div in document.getElementById( div_id ).innerHTML. This doesn't work.

I have to put the name of the actual div like this: document.getElementById( 'result' ).innerHTML

And to get the value of a form element I have to put the actual name like this:

HTML Code:

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Oct 22, 2010

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function(data){
$("#result").html(data);

[Code].....

causes javascript errors in unrelated sections of code.

The second version can be used in a common routine that doesn't know what is being passed.

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Apr 28, 2011

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A simple example is:

The variables (1,3) & (8,9) are loaded dynamically with a php script. Adding the two variables together isn't the intent of the script, but it seems the simplest way to explain what i'm after.

So how do you get $(this) to work in a function that has to have variables passed to it?

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Mar 30, 2004

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May 26, 2010

It is kind of difficult to explain what I am trying to do here, I will provide the form here to give a better idea.

<ul>
<li>Select the type of your starting point of interest:<br/>
<div id="start_menu"><form action="test_getrss.php" name="form1" method="post">
<span><input type="radio" value="Apartment" name="start"

[Code]....

I get values for start_time, end_time and semester, but not the last two values. I noticed that the first two forms here are dynamically generated from Ajax.

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Jan 10, 2011

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<!-- Populate list with friends START-->
var newTextbox = document.createElement('select');
newTextbox.className = 'fn-select';
newTextbox.name = "opcion";

//First user in the populated select menu is the person Loged in
var op1 = new Option("", "Oliver Franchis");
newTextbox.appendChild(op1);
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op1.appendChild(txt1);

//Next users are my friends in the database
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newTextbox.appendChild(op1);
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Jul 23, 2005

Is it true that Javascript has no clone() method, to pass an object by copy of value instead of reference?

If I have an object and want to make an array out of all of its instance variables, I can loop through it and pass its values to a new array, and the class instances will be passed by copy and not by reference?

Example 9.3: References Themselves Are Passed by Value

// This is another version of the add_to_totals() function. It doesn't
// work, through, because instead of changing the array itself, it
tries to
// change the reference to the array.
function add_to_totals2(totals, x)
{
newtotals = new Array(3);
newtotals[0] = totals[0] + x;
newtotals[1] = totals[1] + x;
newtotals[2] = totals[2] + x;
totals = newtotals; // this line has no effect outside of the
function.
}

Note that this rule applies not only to pass-by-reference, but also copy-by-reference. You can modify an object through a copy of a reference, but changing the copied reference itself does not affect the object nor the original reference to the object. This is a more intuitive and less confusing case, so we don't illustrate it with an example.

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Sep 28, 2005

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function doSomething(e) {
if (!e) var e = window.event;
alert(e.type);[code].....

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<head>
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