javascript concat two string code example

Example 1: js concatenate strings

const str1 = 'Hello';
const str2 = 'World';

console.log(str1 + str2);
>> HelloWorld

console.log(str1 + ' ' + str2);
>> Hello World

Example 2: concat no and string in javascript

['Hello', ' ', 'World'].join(''); // 'Hello World'