Question

need help, I try to cut complexity and make simple example:

<div id="tree_div">
   <ul>
      <li id="tree_li_401">401</li>
      <li id="tree_li_101">101</li>
      <li id="tree_li_301">301</li>
      <li id="tree_li_201">201</li>
      <li id="tree_li_102">102</li>
      <li id="tree_li_402">402</li>
   </ul>
</div>

I need to hide all li elements base on first number after tree_li_

For example: I need to hide all elements which have number 4 after tree_li_:

<li id="tree_li_402">
<li id="tree_li_401">

Answer 1

You can use attribute selectors to target those elements:

$('li[id^="tree_li_4"]').hide();

Here’s a list of all the attribute selectors that jQuery supports.