how to call jQuery(this) from anchor tag onclick function

Question

I have

 <ul>
            <li><a onclick="setSelectedTestPlan();" href="javascript:void(0);">New Test</a></li>
            <li><a onclick="setSelectedTestPlan();" href="javascript:void(0);">New Test fdgfdgfdgfdgfdgfdgfdgfdg fdg</a></li>
            <li><a onclick="setSelectedTestPlan();" href="javascript:void(0);">New Plan</a></li>
            <li><a onclick="setSelectedTestPlan();" href="javascript:void(0);">Test</a></li>
        </ul>

code and wants to add class name to a tag parrent tag li i.e. class="selected" bu sing jquery. I used this jquery code

function setSelectedTestPlan() {
        jQuery("#tree ul li").each(function () {
            jQuery(this).removeClass("selected");
        });

        jQuery(this).closest('li').addClass("selected");
    }

But this line jQuery(this).closest('li').addClass("selected"); doesn't work...

Please help me out...

Answer 1

HTML

<li><a onclick="setSelectedTestPlan(this);" href="javascript:void(0);">New Test</a></li>

js

function setSelectedTestPlan(el) {      
       jQuery("#tree ul li").removeClass("selected");
       jQuery(el).closest('li').addClass("selected");
    }

or

js

function setSelectedTestPlan(el) { 
   jQuery(el).closest('li').addClass("selected").siblings().removeClass("selected");
}