Question

say there is an element #button with the attribute onmousedown containing some random javascript how could I trigger the js in that element attribute using jQuery?

j("#otherbutton").click(function(){ 
         var script =  j("#button").attr("onmousedown"); //what now? 
});

Answer 1

Or j("#button").trigger("mousedown"); which will execute the code in the onmousedown attribute and any event handlers attached to the “mousedown” event.