The struts2 jquery plugin is used to:

• It provides the user with an easy integration of ajax and widgets.
• It reduces the number of code to be written by a coder.

For example: 

<div id="result">Result Div</div>
<s:url id="ajax" value="/ajax1.action"/>
<sj:a id="ajaxlink" href="%{ajax}" indicator="indicator" targets="result" effect="highlight">
Run AJAX Action
</sj:a>
<img id="indicator" src="images/indicator.gif" alt="LOADING..." style="DISPLAY:none"/>

The advantages of USING it are:

• It reduces the number of code to be written dramatically.
• It also supports ajax form validation.
• The code becomes much easier to READ and HENCE prevents errors from occurring and is easy to debug.

The struts2 jquery plugin is used to:

For example: 

<div id="result">Result Div</div>
<s:url id="ajax" value="/ajax1.action"/>
<sj:a id="ajaxlink" href="%{ajax}" indicator="indicator" targets="result" effect="highlight">
Run AJAX Action
</sj:a>
<img id="indicator" src="images/indicator.gif" alt="Loading..." style="display:none"/>

The advantages of using it are: