JavaScript String concat()
Examples
Join two strings:
let text1 = "sea";
let text2 = "food";
let result = text1.concat(text2);
Try it Yourself »
let text2 = "food";
let result = text1.concat(text2);
Join two strings:
let text1 = "Hello";
let text2 = "world!";
let result = text1.concat(" ", text2);
Try it Yourself »
let text2 = "world!";
let result = text1.concat(" ", text2);
More examples below.
Description
The concat() method joins two or more strings.
The concat() method does not change the existing strings.
The concat() method returns a new string.
Syntax
string.concat(string1, string2, ..., stringX)
Parameters
Parameter
Description
string1,
string2,
...
stringX Required.
The strings to be joined.
string2,
...
stringX Required.
The strings to be joined.
Return Value
Type
Description
A string A new string containing the combined strings.
More Examples
Join three strings:
let text1 = "Hello";
let text2 = "world!";
let text3 = "Have a nice day!";
let result = text1.concat(" ", text2, " ", text3);
Try it Yourself »
let text2 = "world!";
let text3 = "Have a nice day!";
let result = text1.concat(" ", text2, " ", text3);
Browser Support
concat() is an ECMAScript1 (JavaScript 1997) feature.
It is supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | Yes |