I have a task to relocate all the <li style="display:none;"> elements that are currently nested under the <ul id="bob"> into another <ul id="cat">. During this relocation process, it is important that all the classes, ids, and CSS styles of the elements are preserved, along with the content itself.
Here's a simple way to move hidden list items:
$('#bob > li:hidden').appendTo('#cat');
This code snippet will transfer all hidden li elements within the ul#bob, including those with style="display:none;".
Elements can be considered hidden due to various reasons:
- They have a CSS property of
display: none;.- They are form elements marked as
type="hidden".- Their width and height are explicitly set to 0.
- An ancestor element is hidden, causing the element to not be visible on the page.
Learn more about the hidden selector in jQuery documentation
If you specifically need elements with style="display: none;", you can use .filter() along with a regular expression like this:
var pattern = /^\s*display:\s*none\s*;?\s*$/gi;
$('#bob > li').filter(function ()
{
return pattern.test($(this).prop('style'));
}).appendTo('#cat');
The regular expression provided is case- and whitespace-insensitive, allowing the semicolon to be optional, as per valid CSS syntax. If these details do not matter, a simpler one-liner approach can be used:
$('#bob > li[style="display:none;"]').appendTo('#cat');
Adding the hidden list items under "bob" to the element with id "cat".
Remove all hidden list items inside the element with id "bob", then append them to the element with id "cat".
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