JSFiddle - React, Tailwind, and code Playground

by jfriend00

CSS

body {font-family: "Courier New"; font-size: 13px;}

JavaScript

var a = [1, 2, 3, 4, 5];
var b = [2, 3];

var result = [], found;
for (var i = 0; i < a.length; i++) {
    found = false;
    // find a[i] in b
    for (var j = 0; j < b.length; j++) {
        if (a[i] == b[j]) {
            found = true;
            break;
        }
    }
    if (!found) {
        result.push(a[i]);
    }
}

$(document.body).append(JSON.stringify(result));