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<!DOCTYPE html>
<html>
<title>JavaScript Number valueOf()方法示例 - 基础教程(div.cn)</title>
<body>
<h2>JavaScript Number 方法</h2>
<p> JavaScript中使用valueOf()方法将Number对象转换为原始值:</p>
<p id="para"></p>
<script>
var x = new Number(50);
var y = x.valueOf();
document.getElementById("para").innerHTML =
"x: value = " + x + ", type = " + typeof x + "<br>" +
"y: value = " + y + ", type = " + typeof y;
</script>
</body>
</html>