如何编写一个循环，使数组的每一部分都可以是任意长度的，变成单个的变量?

Currently I have this

目前我有一

var howM = prompt("How many cards?")

var arr = [];
for(var i = 0; i < howM; i++)
arr.push(prompt("Enter a card:"));

console.log(arr)
var howM = prom