on button class click code example

Example 1: jquery is triggered on every element with class name

$(".yourButtonClass").on('click', function(event){
    event.stopPropagation();
    event.stopImmediatePropagation();
    //(... rest of your JS code)
});

Example 2: class onclick jqery

$(".addproduct").unbind().click(function(){
   //do something 
});