CSSPrimitiveValue.setFloatValue()

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setFloatValue() 方法在 CSSPrimitiveValue interface is used to set a float value. If the property attached to this value can't accept the specified unit or the float value, the value will be unchanged and a DOMException 会被引发。

句法

cssPrimitiveValue.setFloatValue(unitType, floatValue);

参数

unitType


								unsigned short

representing the code for the unit type, in which the value should be returned. Valid values are:

常量	描述
`CSS_CM`	The value is a `<length>` in centimeters.
`CSS_DEG`	The value is an `<angle>` in degrees.
`CSS_DIMENSION`	The value is a `<number>` with an unknown dimension.
`CSS_EMS`	The value is a `<length>` in em units.
`CSS_EXS`	The value is a `<length>` in ex units.
`CSS_GRAD`	The value is an `<angle>` in grads.
`CSS_HZ`	The value is a `<frequency>` in Hertz. The value can be obtained by using the getFloatValue method.
`CSS_IN`	The value is a `<length>` in inches.
`CSS_KHZ`	The value is a `<frequency>` in Kilohertz.
`CSS_MM`	The value is a `<length>` in millimeters.
`CSS_MS`	The value is a `<time>` in milliseconds.
`CSS_NUMBER`	The value is a simple `<number>` .
`CSS_PC`	The value is a `<length>` in picas.
`CSS_PERCENTAGE`	The value is a `<percentage>` .
`CSS_PT`	The value is a `<length>` in points.
`CSS_PX`	The value is a `<length>` (以像素为单位)。
`CSS_RAD`	The value is an `<angle>` in radians.
`CSS_S`	The value is a `<time>` in seconds.

floatValue


								float

representing the new float value.

返回值

Void.

异常

类型	描述
`DOMException`	An `INVALID_ACCESS_ERR` is raised if the CSS value doesn't contain a float value or if the string value can't be converted into the specified unit. An NO_MODIFICATION_ALLOWED_ERR is raised if this property is read-only.

规范

规范	状态	注释
Document Object Model (DOM) Level 2 Style Specification The definition of 'CSSPrimitiveValue.setFloatValue' in that specification.	过时	初始定义

浏览器兼容性

The compatibility table on 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. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`setFloatValue` 弃用	Chrome 不支持 No	Edge 不支持 No	Firefox 不支持 ? — 62	IE ?	Opera 不支持 No	Safari ?	WebView Android 不支持 No	Chrome Android 不支持 No	Firefox Android 不支持 4 — 62	Opera Android ?	Safari iOS ?	Samsung Internet Android 不支持 No

图例

不支持
兼容性未知 ?
弃用。不要用于新网站。

元数据

最后修改： 2019 年 3 月 23 日

DOM (文档对象模型)
CSSPrimitiveValue
特性
1. primitiveType
方法
1. getCounterValue()
2. getFloatValue()
3. getRectValue()
4. getRGBColorValue()
5. getStringValue()
6. setFloatValue()
7. setStringValue()
继承：
1. CSSValue
DOM 相关页面

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句法

参数

返回值

异常

规范

浏览器兼容性

图例

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