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JS & DOM Reference

Overview

JavaScript Objects

JS Array
JS Boolean
JS Date
JS Math
JS Number
JS String
JS RegExp
JS Global

Browser Objects

Window
Navigator
Screen
History
Location

Core DOM Objects

DOM Node
DOM NodeList
DOM NamedNodeMap
DOM Document
DOM Element
DOM Attr

HTML DOM Objects

DOM Document
DOM Events
DOM Elements

DOM Anchor
DOM Area
DOM Base
DOM Body
DOM Button
DOM Form
DOM Frame/IFrame
DOM Frameset
DOM Image
DOM Input Button
DOM Input Checkbox
DOM Input File
DOM Input Hidden
DOM Input Password
DOM Input Radio
DOM Input Reset
DOM Input Submit
DOM Input Text
DOM Link
DOM Meta
DOM Object
DOM Option
DOM Select
DOM Style
DOM Table
DOM td / th
DOM tr
DOM Textarea

JavaScript concat() Method

JavaScript String Object

Definition and Usage

The concat() method is used to join two or more strings.

This method does not change the existing strings, it only returns a copy of the joined strings.

Syntax

string.concat(string2, string3, ..., stringX)

Parameter	Description
string2, string3, ..., stringX	Required. The strings to be joined

Browser Support

The concat() method is supported in all major browsers.

Examples

Example 1

Join two strings:

The output of the code above will be:

Hello world!

Try it yourself »

Example 2

Join three strings: