JavaScript深拷贝

JavaScript深拷贝递归实现

var deepclone=function (target) {
    if(typeof target=='object'){
        if(target==null){
            return null;
        }else if(Array.isArray(target)){
            let result=[];
            for(let i in target){
                result.push(deepclone[target[i]]);
            }
        }else if(target.constructor==RegExp){
            let result=target;
            return result;
        }else{
            result={};
            for(let i in target){
                result[i]=deepclone(target[i]);
            }
            return result;
        }
    }else{
        return target;
    }
}