String.prototype.fontsize()

Syntax

fontsize(size)

Parameters

size

An integer between 1 and 7, or a string representing a signed integer between 1 and 7.

Return value

A string beginning with a <font size="size"> start tag (double quotes in size are replaced with "), then the text str, and then a </font> end tag.

Description

The fontsize() method itself simply joins the string parts together without any validation or normalization. However, to create valid <font> elements, When you specify size as an integer, you set the font size of str to one of the 7 defined sizes. You can specify size as a string such as "-2" or "+3" to adjust the font size of str relative to 3, the default value.

Examples

Using fontsize()

The code below creates an HTML string and then replaces the document's body with it:

const contentString = "Hello, world";

document.body.innerHTML = contentString.fontsize(7);

This will create the following HTML:

<font size="7">Hello, world</font>

Instead of using fontsize() and creating HTML text directly, you should use CSS to manipulate fonts. For example, you can manipulate font-size through the element.style attribute:

document.getElementById("yourElemId").style.fontSize = "7pt";

Specifications

Browser compatibility

See also

• Polyfill of String.prototype.fontsize in core-js
• es-shims polyfill of String.prototype.fontsize
• HTML wrapper methods
• <font>