I have a few button created in PHP, when I try calling a jQuery function based on the button class name. The function on click doesn't seem to work.

PHP

$style = " margin: 0px; background-color: transparent; border: none;";
    $functionname= "selectedpic(this.id)";
    $styleimage = "HEIGHT= 120  WIDTH= 120  BORDER= 0";
    $eventimage1= "zoomin(this)";
    $eventimage2= "zoomout(this)";
    $btnclass="btnclass";

echo "<button name='" . $btn. "'
            margin ='".$style."'
            onClick='".$functionname."'
            class='".$btnclass."'
            >";

jquery

$(".btnclass").click(function () {
var clickedButtonName = this.name;
   alert ("hi");
 });

Your code looks ok make sure the javascript is inside <script></script> tags

and try wrapping your jQuery code in $(document).ready(); ie.

 $(function(){
    $(".btnclass").click(function () {
      var clickedButtonName = this.name;
      alert ("hi");
      });
 });

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