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js select下拉联动 更具级联性!

时间:2020-12-12 08:58:05 | 栏目:JavaScript代码 | 点击:

之前有过记录,select下拉联动 (Bootstrap、JQuery插件之cxselect)区别在这个级联性更强。

HTML源码:

<!DOCTYPE html> 
<head> 
 <meta charset="utf-8"> 
 <title></title> 
</head> 
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script> 
<script type="text/javascript" src="USjs.js"></script> 
<body> 
 
<div class="container"> 
 <table> 
 <tr> 
  <td>厂商:</td> 
  <td><select id="selF"><option>请选择</option></select></td> 
  <td>品牌:</td> 
  <td><select id="selT"><option>请选择</option></select></td> 
  <td>型号:</td> 
  <td><select id="selC"><option>请选择</option></select></td> 
  <td><input type="button" value="查询" id="Button1" class="btn" /></td> 
 </tr> 
 </table> 
</div> 
 
</body> 
</html> 

JS(USjs.js)源码: 在转载的基础上做了修改,特别是源数据JSON格式。

$(function(){ 
 
 function objInit(obj){ 
 return $(obj).html('<option>请选择</option>'); 
 } 
 
 $.getJSON('data.json', function(json) { 
 var arrData = json; 
 $.each(arrData,function(pF,pV){ 
  $('#selF').append('<option value="'+pF+'">'+pV.n+'</option>'); 
 }); 
 $('#selF').change(function(){ 
  objInit('#selT'); 
  objInit('#selC'); 
  $.each(arrData,function(pF,pS){ 
  if($('#selF option:selected').attr('value')==pF){ 
   $.each(pS.s,function(pT,pC){ 
   $('#selT').append('<option value="'+pT+'">'+pC.n+'</option>'); 
   }); 
   $('#selT').change(function(){ 
   objInit('#selC'); 
   $.each(pS.s,function(pT,pC){ 
    if($('#selT option:selected').attr('value')==pT){ 
    $.each(pC.s,function(ii,vv){ 
     $('#selC').append('<option value="'+ii+'">'+vv.n+'</option>'); 
    }) 
    } 
   }) 
   }); 
  } 
  }) 
 }); 
 }); //getJSON 
}); 

JSON(data.json)文件

[ 
 { 
 "n":"厂商1", 
 "s":[ 
  { 
  "n":"品牌一", 
  "s":[{"n":"型号1-1-1"},{"n":"型号1-1-2"}] 
  }, 
  { 
  "n":"品牌二", 
  "s":[{"n":"型号1-2-1"},{"n":"型号1-2-2"}] 
  } 
  ] 
 }, 
 { 
 "n":"厂商2", 
 "s":[ 
  { 
  "n":"品牌一", 
  "s":[{"n":"型号2-1-1"},{"n":"型号2-1-2"}] 
  }, 
  { 
  "n":"品牌二", 
  "s":[{"n":"型号2-2-1"},{"n":"型号2-2-2"}] 
  } 
  ] 
 }, 
 { 
 "n":"厂商3", 
 "s":[ 
  { 
  "n":"品牌一", 
  "s":[{"n":"型号3-1-1"},{"n":"型号3-1-2"}] 
  }, 
  { 
  "n":"品牌二", 
  "s":[{"n":"型号3-2-1"},{"n":"型号3-2-2"}] 
  } 
  ] 
 } 
] 

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