JS hanya melaksanakan kemahiran kod_javascript kesan menu pautan berbilang peringkat Pilih-tutorial js-php.cn

JS hanya melaksanakan kemahiran kod_javascript kesan menu pautan berbilang peringkat Pilih

WBOY

Lepaskan： 2016-05-16 15:40:42

asal

1162 orang telah melayarinya

Contoh dalam artikel ini menerangkan pelaksanaan ringkas kod kesan menu pautan Pilih berbilang peringkat menggunakan JS. Kongsikan dengan semua orang untuk rujukan anda. Butirannya adalah seperti berikut:

Menu pautan JS, kod mudah untuk melaksanakan menu pautan Pilih berbilang peringkat JS, iaitu menu yang biasa digunakan oleh semua orang, menu dalam keadaan pautan Pilih, kesan yang sering dilihat pada halaman web, saya harap semua orang boleh menggunakannya .

Tangkapan skrin kesan berjalan adalah seperti berikut:

Alamat demo dalam talian adalah seperti berikut:

http://demo.jb51.net/js/2015/js-simple-select-ld-menu-codes/

Kod khusus adalah seperti berikut:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>JS联动下拉框</title>
<script language="javascript" >
/* 
** ====================================
** 类名：CLASS_LIANDONG_YAO 
** 功能：多级连动菜单 
** 作者：YAODAYIZI 
**/  
 function CLASS_LIANDONG_YAO(array)
 {
 //数组，联动的数据源
  this.array=array; 
  this.indexName='';
  this.obj='';
  //设置子SELECT
 // 参数：当前onchange的SELECT ID，要设置的SELECT ID
 this.subSelectChange=function(selectName1,selectName2)
  {
  //try
  //{
 var obj1=document.all[selectName1];
 var obj2=document.all[selectName2];
 var objName=this.toString();
 var me=this;
 obj1.onchange=function()
 {
  me.optionChange(this.options[this.selectedIndex].value,obj2.id)
 }
  }
  //设置第一个SELECT
 // 参数：indexName指选中项,selectName指select的ID
  this.firstSelectChange=function(indexName,selectName) 
  {
  this.obj=document.all[selectName];
  this.indexName=indexName;
  this.optionChange(this.indexName,this.obj.id)
  }
 // indexName指选中项,selectName指select的ID
  this.optionChange=function (indexName,selectName)
  {
 var obj1=document.all[selectName];
 var me=this;
 obj1.length=0;
 obj1.options[0]=new Option("请选择",'');
 for(var i=0;i<this.array.length;i++)
 { 
  if(this.array[i][1]==indexName)
  {
  //alert(this.array[i][1]+" "+indexName);
 obj1.options[obj1.length]=new Option(this.array[i][2],this.array[i][0]);
  }
 }
  } 
 }
 </script>
</head>
<body>
<form name="form1" method="post">
   
  <SELECT ID="s1" NAME="s1" >
 <OPTION selected></OPTION>
  </SELECT>
  <SELECT ID="s2" NAME="s2" >
 <OPTION selected></OPTION>
  </SELECT>
  <SELECT ID="s3" NAME="s3">
 <OPTION selected></OPTION>
  </SELECT>
  <br>
  <br><br>
  <SELECT ID="x1" NAME="x1" >
 <OPTION selected></OPTION>
  </SELECT>
  <SELECT ID="x2" NAME="x2" >
 <OPTION selected></OPTION>
  </SELECT>
  <SELECT ID="x3" NAME="x3">
 <OPTION selected></OPTION>
  </SELECT>
  <SELECT ID="x4" NAME="x4">
 <OPTION selected></OPTION>
  </SELECT>
  <SELECT ID="x5" NAME="x5">
 <OPTION selected></OPTION>
  </SELECT>
 </form>
 </body>
<script language="javascript">
//例子1-------------------------------------------------------------
//数据源
var array=new Array();
 array[0]=new Array("华南地区","根目录","华南地区"); //数据格式 ID，父级ID，名称
 array[1]=new Array("华北地区","根目录","华北地区");
 array[2]=new Array("上海","华南地区","上海");
 array[3]=new Array("广东","华南地区","广东");
 array[4]=new Array("徐家汇","上海","徐家汇");
 array[5]=new Array("普托","上海","普托"); 
 array[6]=new Array("广州","广东","广州");
 array[7]=new Array("湛江","广东","湛江");
 //--------------------------------------------
 //这是调用代码
 var liandong=new CLASS_LIANDONG_YAO(array) //设置数据源
 liandong.firstSelectChange("根目录","s1"); //设置第一个选择框
 liandong.subSelectChange("s1","s2"); //设置子级选择框
 liandong.subSelectChange("s2","s3");
 //例子2-------------------------------------------------------------
 //数据源 
 var array2=new Array();//数据格式 ID，父级ID，名称
 array2[0]=new Array("测试测试","根目录","测试测试"); 
 array2[1]=new Array("华北地区","根目录","华北地区");
 array2[2]=new Array("上海","测试测试","上海");
 array2[3]=new Array("广东","测试测试","广东");
 array2[4]=new Array("徐家汇","上海","徐家汇");
 array2[5]=new Array("普托","上海","普托"); 
 array2[6]=new Array("广州","广东","广州");
 array2[7]=new Array("湛江","广东","湛江");
 array2[8]=new Array("不知道","湛江","不知道");
 array2[9]=new Array("5555","湛江","555");
 array2[10]=new Array("++++","不知道","++++");
 array2[11]=new Array("111","徐家汇","111");
 array2[12]=new Array("222","111","222");
 array2[13]=new Array("333","222","333");
 //--------------------------------------------
 //这是调用代码
 //设置数据源
 var liandong2=new CLASS_LIANDONG_YAO(array2);
 //设置第一个选择框
 liandong2.firstSelectChange("根目录","x1");
 //设置子选择框
 liandong2.subSelectChange("x1","x2")
 liandong2.subSelectChange("x2","x3")
 liandong2.subSelectChange("x3","x4")
 liandong2.subSelectChange("x4","x5")
</script>
</html>

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