String.prototype.sub()
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. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
The sub()
method creates a <sub>
HTML element that causes a string to be displayed as subscript.
Syntax
JavaScript
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<var>str</var>.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:
JavaScript
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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 | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'String.prototype.sub' 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 2017 Draft (ECMA-262) The definition of 'String.prototype.sub' in that specification. |
Draft | Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 1.0 (1.7 or earlier) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | 1.0 (1.0) | (Yes) | (Yes) | (Yes) |
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/string/sub