<script type="text/javascript">

         $(function(){

             var myArray=new Array();    ///数组

             myArray[0]="fgh";

             myArray[1]="rt";

             myArray[2]="xc";

             var arrString=JSON.stringify(myArray);    //将myArray对象转化为字符串

             alert(arrString);    //["fgh","rt","xc"]

             var obj1=eval("("+arrString+")");    ///eval将字符串转为json对象，注意在两边加上"("和")"

             alert("数组第1个元素"+obj1[0]);

             var myMap = {};    //对象

             myMap['name'] = "lxd";

             myMap['age'] = 20;

             myMap['content'] = myArray;

             var mapString=JSON.stringify(myMap);    ///将myMap对象转化为字符串

             alert(mapString);    ///{"name":"lxd","age":20,"content":["fgh","rt","xc"]}

             var obj2=eval("("+mapString+")");

             alert("map中的name字段："+obj2.name);

         });

     </script>