JSFiddle - React, Tailwind, and code Playground

by Sinh Nguyen

JavaScript

var a = [1,2,3,4,5];
var b = [6,7];
b = [...b,...a];
// b = a;
console.log(a)
console.log(b)
a[0] = -1;
console.log(a)
console.log(b)