Double-layer ajax nesting (can be multi-layered) usage examples

This article mainly introduces the usage of double-layer ajax nesting (can be multi-layered), and analyzes the related usage skills of Ajax nesting with examples. It can realize the function of multi-layer nesting and has certain reference value. Friends in need You can refer to the example below

This article describes the usage of double-layer ajax nesting (can be multi-layered). Share it with everyone for your reference. The details are as follows:

function addbus()
{
  //清除a标签中的所有元素
  // $("#s1").remove();
  var chooseIdTypeOne =$("#chooseIdTypeOne2").find("option:selected").val();
  $.ajax({ 
  url : "/ftcms/changeProject.do?getOriginal&OriginalName="+chooseIdTypeOne, 
  data : null, // 参数 
  type : "post", 
  cache : false, 
  dataType : "json", //返回json数据 
  error: function(){ 
  //document.getElementById("chooseIdTypeOnechdranone").options.length = 0;
  alert('error');  
  }, 
  success:onchangecal 
  }); 
  } 
  function onchangecal(data){
  var chooseIdTypeOne =$("#chooseIdTypeOne2").find("option:selected").val();
   document.getElementById("chooseIdTypeOnechdranone2").options.length = 0; //清空原有的option 
  var str="<option value=&#39;00000&#39;>请选择</option>";
  if(chooseIdTypeOne==1){
  $.ajax({ 
  url : "/ftcms/changeProject.do?getOriginal&OriginalName="+chooseIdTypeOne, 
  data : null, // 参数 
  type : "post", 
  cache : false, 
  dataType : "json", //返回json数据 
  error: function(){ 
  //document.getElementById("chooseIdTypeOnechdranone").options.length = 0;
  alert(&#39;error&#39;);  
  }, 
  success:onchangecal 
  }); 
  } 
  } 
  }
  if(chooseIdTypeOne==2){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==3){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==4){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==5){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==6){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==7){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==8){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==9){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==10){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==11){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==12){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  if(chooseIdTypeOne==13){
  for(var i=0;i<data.length;i++){ 
   str+="<option value=&#39;"+data[i].UID+"&#39;>"+data[i].NAME+"</option>"
  } 
  }
  $("#chooseIdTypeOnechdranone2").html(str);
}

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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