JSFiddle - React, Tailwind, and code Playground

by saidulu401

JavaScript

var data = [{ m: 1 }, { m: 2 }, { m: 3 }, { m: 4 }, { m: 5 }, { m: 6 }, { m: 7 }, { m: 8 }, { m: 9 }, { m: 10 }, { m: 11 }, { m: 12 }],
    file = [{ m: 1 }, { m: 3 }],
    mySet = new Set(file.map(a => a.m)),
    result = data.map(a => mySet.has(a.m));
console.log(mySet);
console.log(result);