When loading the list, jquery gets the attributes of the first li in ul_jquery

When loading the list, you want to select the first item by default. top_menu is the ID of ul

You can get the first li tag under ul through $("#top_menu li:first"). Then you can use

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

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

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

$("#top_menu li:first a")

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

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

Copy code The code is as follows: