jquery - On event doesn't work -


a simple question:

when use 

$(document).on('click', '.btn-del-top', function(e) {})

everyhing work, if use 

$('.btn-del-top').on('click', function(e) {})

nothing work.is there explanation?

it because btn-del-top elements created dynamically or created after $('.btn-del-top').on('click', function(e) {}) code executed.

demo1: in case not working because code not inside dom ready


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