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Thank you! That was the nudge I needed.
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Hello, I have two multi select lists on a page that contain countries. &nbsp;ListA and ListB &nbsp;are populated with the countries.<br />
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In ListA the user selects only USA and Canada. Now in ListB I want to only show the countries selected in ListA.<br />
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How do you do that in jQuery
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Hello, I have two multi select lists on a page that contain countries.  ListA and ListB  are populated with the countries.

In ListA the user selects only USA and Canada. Now in ListB I want to only show the countries selected in ListA.

How do you do that in jQuery

jQuery show in one list that is selected in another

jQuery (Core) is a cross-browser JavaScript library that provides abstractions for common client-side tasks such as Document Object Model (DOM) traversal, DOM manipulation, event handling, animation and Ajax. jQuery also provides a platform to create plugins that extend jQuery's capabilities beyond those already provided by the library.

jQuery

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.