<script src="js_code.js"></script> <script> $(document).ready(function() { $('body').on("click",'.heart_animation_Class',function() { var A=$(this).attr("id"); var B=A.split("like"); var messageID=B[1]; var C=parseInt($("#count_For_Like"+messageID).html()); $(this).css("background-position","") var D=$(this).attr("rel"); if(D === 'like') { $("#count_For_Like"+messageID).html(C+1); $(this).addClass("heartAnimation").attr("rel","unlike"); } else { $("#count_For_Like"+messageID).html(C-1); $(this).removeClass("heartAnimation").attr("rel","like"); $(this).css("background-position","left"); } }); }); </script>