title: how to assign variable value to jquery?
body: <pre><code>var s="attr"
  var i=$(s)
  // jQuery(elem).attr(attr,eval("elm"+attr));
  jQuery(elem).$(s)(attr,eval("elm"+attr));//i tried this.
  </code></pre>
  
  <p>how to assign a variable name in the above code(in place of s) so that i need to add an attribute to the element "elem".</p>