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CSSStyleDeclaration JS Conversion


JavaScript String concat()

Example

Join two strings:

let str1 = "Hello ";
let str2 = "world!";
let res = str1.concat(str2);
Try it Yourself »

More "Try it Yourself" examples below.


Definition and Usage

The concat() method joins two or more strings.

concat() does not change the existing strings, but returns a new string.


Browser Support

concat() is an ES1 feature (JavaScript 1999).

It is fully supported in all browsers:

Chrome IE Edge Firefox Safari Opera
Yes Yes Yes Yes Yes Yes

Syntax

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

Parameter Values

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


Technical Details

Return Value: A new String, containing the text of the combined strings
JavaScript Version: ECMAScript 1

More Examples

Example 2

Join three strings:

let str1 = "Hello ";
let str2 = "world!";
let str3 = " Have a nice day!";
let res = str1.concat(str2, str3);
Try it Yourself »

Related Pages

String Tutorial

String Methods

String Search