I want the first li be opened by default and when I click on an "a" tag that is opened the-CodePudding

   Here my html :
    <ul id="navLeft">
      <li>
        <a >aaaa</a>
        <ul >
          <li><a>1111</a></li>
          <li><a>1111</a></li>
          <li><a>1111</a></li>
        </ul>
      </li>
      <li>
        <a >bbbb</a>
        <ul >
          <li><a>2222</a></li>
          <li><a>2222</a></li>
          <li><a>2222</a></li>
        </ul>
      </li>
      <li>
        <a >cccc</a>
        <ul >
          <li><a>3333</a></li>
          <li><a>3333</a></li>
          <li><a>3333</a></li>
        </ul>
      </li>
    </ul>
    </body>
    
    CSS:
     .children{
      display: none;
    }


jquery:
     $(".nav_a").click(function () {
        $('ul.children').not($(this).next('ul.children')).removeClass("expanded").slideUp();
        $(this).next('ul.children').toggleClass("expanded").slideToggle(250);
    });

CodePudding user response：

#navLeft li:first-child .children{
 display:block;
}

I hope this css is what you are looking for. If this is not working Please give a detailed description.

CodePudding user response：

Can you please Check the below script instead of your script and tell me this is what you are looking for.

$('#navLeft li>a').click(function(){
    $('ul.children').not($(this).next('ul.children')).removeClass("expanded").slideUp();
    $(this).next('ul.children').toggleClass("expanded").slideToggle(250);
});

If this is what you are trying to acheive then don't forget to mark it as a correct answer.