深度复制JavaScript对象

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/wlx1991/article/details/50737761

Object.prototype.deepClone = function () {
	if(window.JSON){
		return JSON.parse(JSON.stringify(this));
	}else{
		function DeepClone () {};
		DeepClone.prototype = this;
		var clone = new DeepClone();
		
		for(var i in this){
			if(this.hasOwnProperty(i)){
				clone[i] = typeof this[i] === 'object' ? this[i].deepClone() : this[i];
			}
		}
		
		return clone;
	}
}

var obja = {
	fn: function () {
		console.log(a);
	}
};

var objb = obja.deepClone();

console.log(obja);
console.log(objb);


var arr1 = [{a:1},{b:2}];
var arr2 = arr1.deepClone();
arr1[0].a = 3;
arr2[1].b = 4;

console.log(arr1);
console.log(arr2);
console.log(arr1 === arr2);