let array = [[5,6],{"name": "temajm"},1,2,3,4]
Array.prototype.newClone = function(){

    // Created by temajm :3

    let newArray = [];

    this.forEach((elem)=> {
        if (elem instanceof Array) {
            newArray.push(elem.newClone());
        }else if(elem instanceof Object){
            let newObj = {};
            for(let attr in elem){
                if(elem.hasOwnProperty(attr)) newObj[attr] = elem[attr];
            }
            newArray.push(newObj);
        }else{
            newArray.push(elem);
        }
    })
    return newArray;
}

// ---- Test function (delete me) ----
let clone = array.newClone()
clone[0][0] = 4;
clone[1].name = "Vit";
clone[2] = 5555;
console.log(array);
console.log(clone);
// ---- Test function (delete me) ----