Prototype set selected option based on other select

Posted by xain on Stack Overflow See other posts from Stack Overflow or by xain
Published on 2010-04-13T13:48:57Z Indexed on 2010/04/13 13:53 UTC
Read the original article Hit count: 231

Filed under:

prototype

|

select

|

option

Hi, how can I "copy" the selected option between two s that have the same options using prototype ? I tried getting the selected option from the "master" combo using

function getSelectedArea() {
  $$('#areacont1 option').find(function(ele){return !!ele.selected})
}

which returns null

And setting the second combo using

var c2ROptions = $$('select#areacont2 option')
c2ROptions[getSelectedArea()].selected = true

That obviously doesn't work because the function returns null.

Any hints?

Thanks.

© Stack Overflow or respective owner

Related posts about prototype

Relation between [[Prototype]] and prototype in JavaScript

as seen on Stack Overflow - Search for 'Stack Overflow'
From http://www.jibbering.com/faq/faq_notes/closures.html : Note: ECMAScript defines an internal [[prototype]] property of the internal Object type. This property is not directly accessible with scripts, but it is the chain of objects referred to with the internal [[prototype]] property that is… >>> More
'click' observer in Prototype

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a page which contains several divs (each with a unique ID and the same class, 'parent'). Underneath each "parent" div, is a div with class "child" and unique ID name -child. This DIV is upon page load empty. Whenever you click on a parent DIV, the following code is executed. $$('div.parent')… >>> More
Javascript: prototype of Number

as seen on Stack Overflow - Search for 'Stack Overflow'
var x= 1; Number.prototype.test = function () { return this }; x.test() === x.test() // false Why does the === test return false? >>> More
equivalent of jQuery's "load" in prototype

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I am trying to find an equivalent for the following jQuery javascript: var x1 = setInterval(function() { $('#status').load("processor.php", {value:'name'} );}, 5000 ); I need to use Prototype for other applications on the page, and when I throw both jQuery and Prototype libraries in there… >>> More
Misunderstanding I have about javascript prototype inheritance

as seen on Stack Overflow - Search for 'Stack Overflow'
Simple questions. function p() { function A() { this.random = "random"; } A.prototype.newfunc = function(){ alert("5");} function B() { } B.prototype = new A(); var bObj = new B(); } Q1: When I… >>> More

Related posts about select

HTML muliple select should look like HTML select

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi I am trying to use a HTML select box with 'multiple' select options and size to 1 as below ` <SELECT NAME="toppings" MULTIPLE SIZE=5> <OPTION VALUE="mushrooms">mushrooms <OPTION VALUE="greenpeppers">green peppers </SELECT> When the size is set to 1 small scrollbar appears… >>> More
MySQL Query Select using sub-select takes too long

as seen on Stack Overflow - Search for 'Stack Overflow'
I noticed something strange while executing a select from 2 tables: SELECT * FROM table_1 WHERE id IN ( SELECT id_element FROM table_2 WHERE column_2=3103); This query took approximatively 242 seconds. But when I executed the subquery SELECT id_element FROM table_2 WHERE column_2=3103 it… >>> More
SQL SERVER- IF EXISTS(Select null from table) vs IF EXISTS(Select 1 from table)

as seen on SQL Authority - Search for 'SQL Authority'
Few days ago I wrote article about SQL SERVER – Stored Procedure Optimization Tips – Best Practices. I received lots of comments on particular blog article. In fact, almost all the comments are very interesting. If you have not read all the comments, I strongly suggest to read them. Click here to… >>> More
Nesting Linq-to-Objects query within Linq-to-Entities query –what is happening under the covers?

as seen on Programmers - Search for 'Programmers'
var numbers = new int[] { 1, 2, 3, 4, 5 }; var contacts = from c in context.Contacts where c.ContactID == numbers.Max() | c.ContactID == numbers.FirstOrDefault() select c; foreach (var item in contacts) Console.WriteLine(item.ContactID); Linq-to-Entities… >>> More
Play Framework: Error getting sequence nextval using H2 in-memory database

as seen on Stack Overflow - Search for 'Stack Overflow'
As the title suggests, I get an error running Play 2.0.1 Tests using a FakeApplication w/ H2 in memory. I set up a basic unit test: public class ModelTest { @Test public void checkThatIndustriesExist() { running(fakeApplication(inMemoryDatabase()), new Runnable() { public… >>> More