JS 循环遍历json

{
"employees": [
{ "firstName":"Bill" , "lastName":"Gates" },
{ "firstName":"George" , "lastName":"Bush" },
{ "firstName":"Thomas" , "lastName":"Carter" }
]
}

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><script type="text/javascript">
   //1.首先json 格式一定要这样写,尽管说这只是其中的一种方式
  var json = {"options":"[{\"text\":\"王家湾\",\"value\":\"9\"},{\"text\":\"李家湾\",\"value\":\"10\"},{\"text\":\"邵家湾\",\"value\":\"13\"}]"} 
  json = eval(json.options)// 注意options，如果不写Options ，下面的写法就是json.options.length
  for(var i=0; i<json.length; i++)
  {
     alert(json[i].text+" " + json[i].value)//访问
  }
</script>

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><script type="text/javascript">
   //1.首先json 格式一定要这样写,尽管说这只是其中的一种方式
  var json = "[\"1\",\"2\"]"
  //2.访问
  json = eval(json)
   alert(json[0]);//1
   alert(json[1]);//2
</script>

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 );  
      }