tryjs_object_string_type 在线代码实例

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<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
</head>
<body>
    
<p id="demo"></p>
<script>
var x = "John";              // x是一个字符串
var y = new String("John");  // y是一个对象
document.getElementById("demo").innerHTML =typeof x + " " + typeof y;
</script>
</body>
</html>
 
 
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运行结果
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