javascript - How to dynamically change classes when DIV width changes? -

i know how change classes jquery when window size changed, need based on width of div , change dynamically when div's width changes.

$(window).resize(function() {     var wrapwidth = $('.info-wrap').width();      if (wrapwidth >= 500) {        $('#partone').addclass('big');       $('#parttwo').addclass('big');      } else {        $('#partone').removeclass('big');       $('#parttwo').removeclass('big');     } }); 

this works when window size changes. but, can use insead of $(window).resize width of div changes?

i think you'll need use plugin jquery, such ben alman's plugin.

i don't think there exists detects when div gets resize, window.