get clicked element using jquery on event? -

update 2016-08-31 this closed popular, i'm editing clean things up. original issue had turned out caching problem. have removed question , answers make more sense , have accepted top answer. useful someone.

re: jquery selector click not firing dynamically generated button?

i'm using following code detect when dynamically generated button clicked.

$(document).on("click",".appdetails", function () {     alert("test"); }); 

normally, if did $('.appdetails').click() use $(this) element clicked on. how accomplish above code?

for instance:

$(document).on("click",".appdetails", function () {     var clickedbtnid = ??????     alert('you clicked on button #' + clickedbtnid); }); 

as simple can be

use $(this) here too

$(document).on("click",".appdetails", function () {    var clickedbtnid = $(this).attr('id'); // or var clickedbtnid = this.id    alert('you clicked on button #' + clickedbtnid); });