String.prototype.fontsize()

已废弃: 该特性已经从 Web 标准中删除,虽然一些浏览器目前仍然支持它,但也许会在未来的某个时间停止支持,请尽量不要使用该特性。

The fontsize() method creates a <font> HTML element that causes a string to be displayed in the specified font size.

备注: The <font> element has been removed in HTML5 and shouldn't be used anymore. Instead web developers should use CSS properties.

语法

str.fontsize(size)

参数

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

返回值

A string containing a <font> HTML element.

描述

When you specify size as an integer, you set the font size of str to one of the 7 defined sizes. When you specify size as a string such as "-2", you adjust the font size of str relative to the size set in the <basefont> tag.

示例

使用fontsize()方法

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

var worldString = 'Hello, world';

console.log(worldString.small());     // <small>Hello, world</small>
console.log(worldString.big());       // <big>Hello, world</big>
console.log(worldString.fontsize(7)); // <font size="7">Hello, world</fontsize>

With the element.style (en-US) object you can get the element's style attribute and manipulate it more generically, for example:

document.getElementById('yourElemId').style.fontSize = '0.7em';

规范

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
String.prototype.fontsize
Standard Initial definition. Implemented in JavaScript 1.0. Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers.
ECMAScript (ECMA-262)
String.prototype.fontsize
Living Standard Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers.

浏览器兼容性

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相关链接