JavaScript包装类：Number、String、Boolean
下面以number举例
var n1 = 123; //number
var n2 = new Number(123); //object
console.log(typeof(n1));
console.log(typeof(n2));
下面以number举例
var n1 = 123; //number
var n2 = new Number(123); //object
console.log(typeof(n1));
console.log(typeof(n2));
本文标题：10.JavaScript包装类
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