每个 SVGAngle object operates in one of two modes:

1. Reflect the base value of a reflected animatable attribute (being exposed through the baseVal member of an SVGAnimatedAngle ),
2. Be detached , which is the case for SVGAngle objects created with SVGSVGElement.createSVGAngle() .

常量

SVG_ANGLETYPE_UNKNOWN

Some unknown type of value.

SVG_ANGLETYPE_UNSPECIFIED

A unitless <number> interpreted as a value in degrees.

SVG_ANGLETYPE_DEG

An <angle> 采用 deg unit.

SVG_ANGLETYPE_RAD

An <angle> 采用 rad unit.

SVG_ANGLETYPE_GRAD

An <angle> 采用 grad unit.

特性

unitType

The type of the value as specified by one of the SVG_ANGLETYPE_* constants defined on this interface.

value

The value as a floating point value, in user units. Setting this attribute will cause valueInSpecifiedUnits and valueAsString to be updated automatically to reflect this setting.

Exceptions on setting: A DOMException with code NO_MODIFICATION_ALLOWED_ERR is raised when the length corresponds to a read-only attribute, or when the object itself is read-only.

valueInSpecifiedUnits

The value as a floating point value, in the units expressed by unitType . Setting this attribute will cause value and valueAsString to be updated automatically to reflect this setting.

Exceptions on setting: A DOMException with code NO_MODIFICATION_ALLOWED_ERR is raised when the length corresponds to a read-only attribute, or when the object itself is read-only.

valueAsString

The value as a DOMString value, in the units expressed by unitType . Setting this attribute will cause value , valueInSpecifiedUnits ，和 unitType to be updated automatically to reflect this setting.

Exceptions on setting:

A DOMException with code SYNTAX_ERR is raised if the assigned string cannot be parsed as a valid <angle> .

A DOMException with code NO_MODIFICATION_ALLOWED_ERR is raised when the length corresponds to a read-only attribute, or when the object itself is read-only.

方法

newValueSpecifiedUnits

Reset the value as a number with an associated unitType, thereby replacing the values for all of the attributes on the object.

Exceptions:

A DOMException with code NOT_SUPPORTED_ERR 被引发若 unitType is SVG_ANGLETYPE_UNKNOWN or not a valid unit type constant (one of the other SVG_ANGLETYPE_* constants defined on this interface).

A DOMException with code NO_MODIFICATION_ALLOWED_ERR is raised when the length corresponds to a read only attribute or when the object itself is read only.

convertToSpecifiedUnits

Preserve the same underlying stored value, but reset the stored unit identifier to the given unitType . Object attributes unitType , valueInSpecifiedUnits ，和 valueAsString might be modified as a result of this method.

规范

规范	状态	注释
Scalable Vector Graphics (SVG) 2 The definition of 'SVGElement' in that specification.	候选推荐	添加 dataset 特性。
Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'SVGElement' in that specification.	推荐	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
SVGAngle	Chrome Yes	Edge ≤18	Firefox Yes	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

元数据

• 最后修改： Jul 13, 2020