js將json串轉化爲JSON 對象

	<script type="text/javascript">
		 var personStr = '{ "name": "archie", "pwd": "123456" }'; 
		 //將json串轉化爲JSON 對象
		 var personObj = eval('(' + personStr + ')');
		 
		 alert(personObj.name);
		 
		 var listStr='[{"name":"tom","pwd":123456,"sex":"男"},{"name":"christina","pwd":123456,"sex":"女"}]';
		
		 var json = eval('(' + listStr + ')');
		 alert(json.length);
	</script>