深度复制

 

　　

function deepClone(origin,target){
    var target = target || {},
        toStr = Object.prototype.toString,
        arrStr = "[object Array]";
    for(var prop in origin){
        if(origin.hasOwnProperty(prop)){ 
            if (origin[prop] !== "null" && typeof(origin[prop]) == "object") {
                if (toStr.call(origin[prop]) == arrStr) {
                    target[prop] = [];
                }else{
                    target[prop] = {};
                }
                deepClone(origin[prop],target[prop]);
            }else{
                target[prop] = origin[prop]
            }
            
        }
    }
    return target;
}


var obj1 = {
    name:'zhang',
    age:25,
    hobit:{
        sport:["basketball","football","run"],
        learn:{
            name:"xxxx",
            catgory:["123",456]
        }
    }
}


var obj = {};

deepClone(obj1,obj)