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jQuery implements the method of serializing form elements into json objects_jquery

WBOY
WBOYOriginal
2016-05-16 15:26:491497browse

The example in this article describes how jQuery implements the serialization of form elements into json objects. Share it with everyone for your reference, the details are as follows:

This code serializes form elements into json objects: 

<!Doctype html>
 <html xmlns=http://www.w3.org/1999/xhtml>
 <head>
 <title>jQuery扩展——form序列化到json对象</title>
 <meta http-equiv=Content-Type content="text/html;charset=utf-8">
 <script type="text/javascript" src="jquery-1.10.2.js"></script>
</head>
<body>
<p id="results"><b>Results:</b> </p>
<form>
 <select name="aModel.single">
 <option>Single</option>
 <option selected>Single2</option>
 </select>
 <br/><br/>
 <select name="aModel.multiple" multiple="multiple">
 <option selected="selected">Multiple</option>
 <option>Multiple2</option>
 <option selected="selected">Multiple3</option>
 </select>
 <br/><br/>
 <input type="checkbox" name="aModel.check" value="check1"/> check1
 <input type="checkbox" name="aModel.check" value="check2" checked="checked"/> check2
 <br/><br/>
 <input type="radio" name="aModel.radio" value="radio1" checked="checked"/> radio1
 <input type="radio" name="aModel.radio" value="radio2"/> radio2
</form>
<script type="text/javascript">
 var fields = $("select, :radio").serializeArray();
 var o={};
 jQuery.each(fields, function(i, fields){
  if(o[this.name]){
   /*
   表单中可能有多个相同标签，比如有多个label，
   那么你在json对象o中插入第一个label后，还要继续插入，
   那么这时候o[label]在o中就已经存在，所以你要把o[label]做嵌套数组处理
   */
   //如果o[label]不是嵌套在数组中
   if(!o[this.name].push){
    o[this.name]=[o[this.name]];  // 将o[label]初始为嵌套数组，如o={a,[a,b,c]}
   }
   o[this.name].push(this.value || ''); // 将值插入o[label]
  }else{
   o[this.name]=this.value || '';  // 第一次在o中插入o[label]
  }
 });
 $("#results").append(JSON.stringify(o));
 console.log(o); //用FireBug输出
</script>
</body>
</html>

The result is as shown below:

I hope this article will be helpful to everyone in jQuery programming.

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