/Javascript/React/Concat two arrays in react

Concat two arrays in react

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]

Source: howchoo.com

Concatenate multiple arrays javascript

const array1 = ['a', 'b', 'c'];
const array2 = ['d', 'e', 'f'];
const array3 = [...array1, ...array2];

console.log(array3);
// expected output: Array ["a", "b", "c", "d", "e", "f"]

Concat two arrays in react

var array1 = [1,2,3,4];
var array2 = [5,-6,7,8.5];

const concatArr = (arr1, arr2, sep) => arr1.map(function (num, idx) {
  return num.toString().concat(sep,(arr2[idx]).toString())
});

console.log(concatArr(array1,array2,"#"))// ["1#5", "2#-6", "3#7", "4#8.5"]

Similar codes

0 vote138 views1 answer
Cannot find module 'sass' react
Javascript React
0 vote125 views1 answer
Form changes button enable reactive forms
Javascript React
11 votes129 views4 answers
Eslint disable react
Javascript React
0 vote175 views1 answer
Testing a function in jest on click react
Javascript React
-1 vote155 views2 answers
React map example leaflets
Javascript React
0 vote130 views1 answer
React navbar material ui
Javascript React
0 vote337 views3 answers
Github react hardhat nft marketplace application
Javascript React
0 vote149 views1 answer
11. Which of the following metals catch fire on reaction with air? A. Magnesium B. Manganese C. Potassium D. Calcium
Javascript React
0 vote126 views1 answer
React Rendering Movies
Javascript React
19 votes136 views6 answers
React native build android apk
Javascript React