Sharing multiple ways of writing how jquery calls the click event

The first way:

$(document).ready(function(){
  $("#clickme").click(function(){
       alert("Hello World  click");
  });

The second way:

 $('#clickmebind').bind("click", function(){
  alert("Hello World  bind");
 });

The third way:

$('#clickmeon').on('click', function(){
 alert("Hello World  on");
});
});

Note: The third way The method is only applicable to versions above jquery 1.7

The source code is as follows:

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