concat javscript code example
Example 1: js combine two arrays
const letters = ['a', 'b', 'c'];
const numbers = [1, 2, 3];
letters.concat(numbers);
// result in ['a', 'b', 'c', 1, 2, 3]
Example 2: string concatenation js
var aString="";
aString.concat(value1, value2, ... value_n);