Use jquery to obtain the attribute of the first li in ul, and jquery to obtain the ulli

Use jquery to obtain the attribute of the first li in ul, and jquery to obtain the ulli

When the list is loaded, the first one is selected by default. ID of ul for top_menu

Use $ ("#Top_menuLi: first ") to obtain the first li tag under ul. Then you can use

For example, modify attributes: $ ("#Top_menuLi: first "). attr (" class "," select ");

Trigger event: $ ("#Top_menuLi: first "). click ();

If you want to obtain the tag under li, as follows:

$ ("#Top_menuLi: first ")

You can also modify attributes: $ ("#Top_menuLi: first a "). attr ("","");

Trigger event: $ ("#Top_menuLi: first a "). click ();

 

<Ul class = "nav white" id ="Top_menu"Name =" top_menu ">
<! -- Level 1 menu -->
<S: iterator value = "list" status = "st">
<Li> <a onclick = ""> <s: property value = "menuName"/> </a> </li>
</S: iterator>
</Ul>

Jquery obtains the number of li in ul.

$ ("# Topmenu li"). length

Jquery obtains the number of li in ul under li.

$ (". Dep_5 li"). length ();