concat elements array javascript code example
Example 1: javascript concat two arrays
//ES6
const array3 = [...array1, ...array2];
Example 2: concat array javascript
const letters = ['a', 'b', 'c'];
const numbers = [1, 2, 3];
const newArray = letters.concat(numbers);
// newArrat is ['a', 'b', 'c', 1, 2, 3]