​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>JavaScript 字符串</h1>
​
<p id="demo"></p>
​
<script>
var x = "Bill";              // x 是字符串
var y = new String("Bill");  // y 是对象
​
document.getElementById("demo").innerHTML =
typeof x + "<br>" + typeof y;
</script>
​
</body>
</html>
​