Try to implement pop

function implementPop(arr){
	Array.prototype.ipop = function(){
		let newArr = [];
		for(let i = 0; i < this.length-1; i++){
			newArr[i] = this[i];
		}
		let popedEl = this.length-1;
		this = newArr;
		return popedEl;
	}

	console.log(arr.ipop());
	console.log(arr);
}

implementPop([1,2,3,4,5,6]);