what mean of concat in javascript 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'