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 <sub>
HTML element that causes a string to be displayed as subscript.
Syntax
str.sub()
Return value
A string containing a <sub>
HTML element.
Description
The sub()
method embeds a string in a <sub>
tag: "<sub>str</sub>"
.
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 (ECMA-262) The definition of 'String.prototype.sub' in that specification. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
sub | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 3 | Opera Full support 3 | Safari Full support 1 | WebView Android Full support 1 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.1.100 |
Legend
- Full support
- Full support
- Deprecated. Not for use in new websites.
- Deprecated. Not for use in new websites.