String.prototype.sub()

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. 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 sub() method creates a  HTML element that causes a string to be displayed as subscript.

Syntax

sub()

Return value

A string containing a  HTML element.

Description

The sub() method embeds a string in a  element: "str".

Examples

Using sub() and sup() methods

The following example uses the sub() and sup() methods to format a string:

var superText = 'superscript';
var subText = 'subscript';

console.log('This is what a ' + superText.sup() + ' looks like.');
// "This is what a <sup>superscript</sup> looks like."

console.log('This is what a ' + subText.sub() + ' looks like.');
// "This is what a <sub>subscript</sub> looks like."

Specifications

Specification
ECMAScript Language Specification (ECMAScript) # sec-string.prototype.sub

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`sub`	1	12	1	3	3	1	1	18	4	10.1	1	1.0