Javascript - String concat() Method

Description

The concat() method can join two or more strings together.

This method does not change the existing strings, it returns a new string containing the text of the joined strings.

Syntax

string.concat(string1,string2, ...,stringX)

Parameter Values

Parameter	Require	Description
string1, string2, ..., stringX	Required.	The strings to be joined

Return

A new String, containing the text of the combined strings

Demo

//Join two strings:
var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2);
console.log(res);/*from w  w  w  .  j av  a  2  s  .  c om*/
//Join three strings:
var str3 = " Have a nice day!";
var res = str1.concat(str2, str3);
console.log(res);