Deprecated
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The bold() method creates a <b> HTML element that causes a string to be displayed as bold.

Syntax

str.bold()

Return value

A string containing a <b> HTML element.

Description

The bold() method embeds a string in a <b> tag: "<b>str</b>".

Examples

Using bold()

The following example uses string methods to change the formatting of a string:

var worldString = 'Hello, world';

console.log(worldString.blink());   // <blink>Hello, world</blink>
console.log(worldString.bold());    // <b>Hello, world</b>
console.log(worldString.italics()); // <i>Hello, world</i>
console.log(worldString.strike());  // <strike>Hello, world</strike>

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'String.prototype.bold' in that specification.
Standard Initial definition. Implemented in JavaScript 1.0. Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers.
ECMAScript Latest Draft (ECMA-262)
The definition of 'String.prototype.bold' in that specification.
Living Standard Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes Yes Yes Yes Yes Yes Yes

See also

Document Tags and Contributors

 Last updated by: fscholz,