concat 2 arrays js code example

Example 1: javascript difference between two arrays

let difference = arr1.filter(x => !arr2.includes(x));

Example 2: combine two arrays javascript

let arr1 = [0, 1, 2];
let arr2 = [3, 5, 7];
let primes = arr1.concat(arr2);

// > [0, 1, 2, 3, 5, 7]

Example 3: merge array in js

//for ES5
var array1 = ["Rahul", "Sachin"];
var array2 = ["Sehwag", "Kohli"];

var output = array1.concat(array2);
console.log(output);

//for ES6, we use spread operators to concat arrays

var array1 = ["Dravid", "Tendulkar"];
var array2 = ["Virendra", "Virat"];

var output = [...array1, ...array2];
console.log(output);

Example 4: javascript concat two arrays

//ES6
const array3 = [...array1, ...array2];

Example 5: join 2 array in javascript

var array1 = ["Vijendra", "Singh"];
var array2 = ["Singh", "Shakya"];

console.log(array1.concat(array2));

Example 6: js join two arrays

[1,2,3].concat([4,5,6])
// [1,2,3,4,5,6]