how to compare two array value in javascript code example
Example 1: javascript find matching elements in two arrays
const intersection = array1.filter(element => array2.includes(element));
Example 2: javascript Compare two arrays regardless of order
const isEqual = (a, b) => JSON.stringify(a) === JSON.stringify(b);
isEqual([1, 2, 3], [1, 2, 3]);
isEqual([1, 2, 3], [1, '2', 3]);
Example 3: compare arrays javascript
const array1 = [1,2,3,4]
const array2 = [1,2,3,4]
array1.join() === array2.join()
const array3 = [1,2,3,[1,2,3]]
const array4 = [1,2,3,[1,2,3]]
JSON.stringify(array3) === JSON.stringify(array4)
Example 4: javascript find matching elements in two arrays
let firstArray = ["One", "Two", "Three", "Four", "Five"];
let secondArray = ["Three", "Four"];
let map = {};
firstArray.forEach(i => map[i] = false);
secondArray.forEach(i => map[i] === false && (map[i] = true));
let jsonArray = Object.keys(map).map(k => ({ name: k, matched: map[k] }));