js中克隆对象

var obj={
    name:'zz',
    age:'11',
    children:[{
        name:'zz1',
        age:'1',
        children:{
            name:'zz11',
            age:'1'
        }
    },{
        name:'zz2',
        age:'2'
    }]
};
function clone(obj){
    if(typeof obj==="object"){
        var nObj;
        if(obj instanceof Array){
            nObj=[];
            obj.forEach(function(item,index){
                nObj.push(clone(item))
            })
        }else{
            nObj={};
            for(var attr in obj){
                nObj[attr]=clone(obj[attr])
            }
        }
        return nObj;
    }else{
        return obj;
    }

}
//var nObj1=Object.assign(obj);
var nObj=clone(obj);
console.log(nObj.children[0].children===obj.children[0].children);
//console.log(nObj1.children[0].children===obj.children[0].children);