/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 vote385 views1 answer
Create react app run test apecific folfer
Javascript React
0 vote469 views1 answer
React set multible attribute values
Javascript React
0 vote387 views2 answers
React js big calendar
Javascript React
0 vote411 views3 answers
React native clear cach
Javascript React
0 vote383 views3 answers
React-router-dom status code 301
Javascript React
0 vote380 views1 answer
To do list app react code
Javascript React
0 vote396 views1 answer
Use this in a react js component
Javascript React
0 vote410 views1 answer
Adding js file to reactjs
Javascript React
0 vote398 views1 answer
Image background full width react
Javascript React
113 votes452 views6 answers
How to create a new react app
Javascript React