zepto and jQuery on event delegation on iPhone

The page made with zepto on the mobile terminal suddenly found that the click event bound to on was not triggered. The code is as follows:

  
　　
1111111aaaaaaasssss
  
　　
aaaaaaassssss
  
　　
ssssssss
  
  

I changed this writing method to a non-event delegation method, and found that the click event was It can trigger

$(‘.a’).on('click',function(argument) {  
　　alert($(this).html())  
});

Finally, try replacing $(document) with $('body') or $('ul'). The experimental result is:

$(document) No

$('body') No

$('ul') OK

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