An explanation of how to use jQuery to implement the double-click table editing function

<span style="font-size:18px;">$(".tables").on("dblclick","td",function(){ 
 if($(this).children("input").length>0){ 
  return false; 
 } 
 var tdDom = $(this); 
 //保存初始值 
 var tdPreText = $(this).text(); 
 //给td设置宽度和给input设置宽度并赋值 
 $(this).width(100).html("<input type='text'>").find("input").width(100).val(tdPreText); 
 //失去焦点的时候重新赋值 
 var inputDom = $(this).find("input"); 
 inputDom.blur(function(){ 
  var newText = $(this).val(); 
  $(this).remove(); 
  tdDom.text(newText); 
 });</span>