Javascript filters all content outside the img tag

The Helper House (www.bkjia.com) tutorial today asked a netizen In the webmaster technical exchange group of bkjia.com, how to use JS to filter all content except the IMG label, in fact, using regular expressions is a good implementation, next we will release the instance code for your research and learning.

Copy to ClipboardReference content: [www.bkjia.com] <script>
S = "content to be filtered ";

Var re =/] +>/g;
Var a = s. match (re );
T = "";
For (var I = 0; I <a. length; I ++ ){
T + = a [I];
}
Alert (t)
</Script>