JavaScript中如何将一个字符串，转换成一个对象类型？？

[pharaohsprince]

var tt = {"address":"","email":"[e-mail]","name":"test5","id":"6"};
alert(tt.name);
结果：test5
--------------------
现在我把 {"address":"","email":"[e-mail]","name":"test5","id":"6"} 作为一个字符串格式传过来。
var resText = xmlHttp.responseText;//能得到一个字符串:{"address":"","email":"[e-mail]","name":"test5","id":"6"}
alert(resText.name);
结果：取不到直~
=================
问？如何解决？？？让alert(resText.name);也等于 test5?

[KimSoft]

var resText = xmlHttp.responseText;//能得到一个字符串:
alert(eval(resText.name));

[mingxuan3000]

mark

[KimSoft]

上面错了。
alert(eval(resText).name);

[hbhbhbhbhb1021]

<script>
var a='"address":"","email":"[e-mail]","name":"test5","id":"6"';
var Aarray=a.split(",");
var result=new Array();
for(var i=0;i<Aarray.length;i++)
{
temp=Aarray[i].split(":");
eval("result['"+temp[0].replace(/\"/g,'')+"']='"+temp[1].replace(/\"/g,'')+"'");
}
alert(result["name"])
</script>

[hbhbhbhbhb1021]

晕，我的方法不好，用KimSoft(革命的小酒天天醉)的

[xuzuning]

s = '{"address":"","email":"[e-mail]","name":"test5","id":"6"};';
eval('o='+s);
alert(o.name);

[LCKKING]

eval

[pharaohsprince]

我这里报错。。~说 缺少 ；?

[DeluxWorld]

resText = '{"address":"","email":"[e-mail]","name":"test5","id":"6"}';
res_array = resText.split(',');
for(i=0;i<res_array.length;i++){
if(res_array[i].indexOf('name') != -1){
res = res_array[i];
alert(res.substring(res.indexOf(':')+2,res.length-1));
}
}

[DeluxWorld]

xuzuning(唠叨)的方法简单~

[pharaohsprince]

多谢各位~~~~~~~