JS 循环遍历JSON数据

JSON数据如：{"options":"[{\"text\":\"王家湾\",\"value\":\"9\"},{\"text\":\"李家湾\",\"valu
e\":\"10\"},{\"text\":\"邵家湾\",\"value\":\"13\"}]"}

用js可以写成： JSON数据如：{"options":"[{\"text\":\"王家湾\",\"value\":\"9\"},{\"text\":\"李家湾\",\"valu
e\":\"10\"},{\"text\":\"邵家湾\",\"value\":\"13\"}]"}

用js可以写成：

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01.var data=[{name:"a",age:12},{name:"b",age:11},{name:"c",age:13},{name:"d",age:14}];
02.      for(var o in data){
03.        alert(o);
04.        alert(data[o]);
05.        alert("text:"+data[o].name+" value:"+data[o].age );
06.      }
var data=[{name:"a",age:12},{name:"b",age:11},{name:"c",age:13},{name:"d",age:14}];
   for(var o in data){
    alert(o);
  alert(data[o]);
    alert("text:"+data[o].name+" value:"+data[o].age );
   }

或是

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01.<script type="text/javascript">
02.function text(){
03.  var json = {"options":"[{\"text\":\"王家湾\",\"value\":\"9\"},{\"text\":\"李家湾\",\"value\":\"10\"},{\"text\":\"邵家湾\",\"value\":\"13\"}]"}
04.  json = eval(json.options)
05.  for(var i=0; i<json.length; i++)
06.  {
07.     alert(json[i].text+" " + json[i].value)
08.  }
09.}
10.</script>



本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/songylwq/archive/2010/12/01/6047609.aspx

view plaincopy to clipboardprint?
01.var data=[{name:"a",age:12},{name:"b",age:11},{name:"c",age:13},{name:"d",age:14}];
02.      for(var o in data){
03.        alert(o);
04.        alert(data[o]);
05.        alert("text:"+data[o].name+" value:"+data[o].age );
06.      }
var data=[{name:"a",age:12},{name:"b",age:11},{name:"c",age:13},{name:"d",age:14}];
  for(var o in data){
  alert(o);
alert(data[o]);
  alert("text:"+data[o].name+" value:"+data[o].age );
  }

或是

view plaincopy to clipboardprint?
01.<script type="text/javascript">
02.function text(){
03.  var json = {"options":"[{\"text\":\"王家湾\",\"value\":\"9\"},{\"text\":\"李家湾\",\"value\":\"10\"},{\"text\":\"邵家湾\",\"value\":\"13\"}]"}
04.  json = eval(json.options)
05.  for(var i=0; i<json.length; i++)
06.  {
07.     alert(json[i].text+" " + json[i].value)
08.  }
09.}
10.</script>


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js和jquery使按钮失效的方法
设置disabled属性为true即为不可用状态。
JS:
document.getElementByIdx("btn").disabled=true;

jquery

$("#btn").attr("disabled", true);

html:
<input type="button" value="提交" id="btn">