W3cubDocs

/JavaScript

boolean.toString

The toString() method returns a string representing the specified Boolean object.

Syntax

bool.toString()

Return value

A string representing the specified Boolean object.

Description

The Boolean object overrides the toString method of the Object object; it does not inherit Object.prototype.toString(). For Boolean objects, the toString method returns a string representation of the object.

JavaScript calls the toString() method automatically when a Boolean is to be represented as a text value or when a Boolean is referred to in a string concatenation.

For Boolean objects and values, the built-in toString() method returns the string "true" or "false" depending on the value of the boolean object.

Examples

Using toString()

In the following code, flag.toString() returns "true":

var flag = new Boolean(true);
var myVar = flag.toString();

Specifications

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
toString 1 12 1 3 4 1
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
toString 1 18 4 10.1 1 1.0
Server
Node.js
toString 0.1.100

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean/toString