JSFiddle - React, Tailwind, and code Playground

by Paul Chang

JavaScript

var arr = [1,2,3]

var string = "function swap(arr) { var newarr = arr; var temp = arr[0]; newarr[0] = arr[arr.length-1]; newarr[arr.length-1] = temp; return newarr }"

var test = eval("[" + string + "]")[0];

test(arr);
console.log(arr);
//this outputs [3,2,1]

test(arr);
console.log(arr);
//this outputs [1,2,3]