深克隆

方法1：

function deepClone(obj){
    if(Array.isAray(obj)){
        var _obj = [];
        for(var key in obj){
            _obj.push(deepClone(obj[key])) ;
        }
        return _obj;
    }else if(typeof obj == "object"){
        var _obj={};
        for(var key in obj){
            _obj[key] = deepClone(obj[key])
        }
        return _obj;
    }else{
        return obj
    }
}

方法2：

//this is javascript
function deepClone(src,target){
    var target = target||{};
    var toStr = Object.prototype.toString;
    for (var attr in src){
        if((typeof src[attr])=="object"&&(typeof src[attr])!==null){
            target[attr] = toStr.call(src[attr])=="[object object]"?{}:[];
            deepClone(src[attr],target[attr])
        }else if ((typeof src[attr])==null){
            target[attr] = null;
        } if ((typeof src[attr])==undefined){
            target[attr] = undefined;
        }else{
            target[attr] = src[attr];
        }
    }
    return target;
}

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