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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

rotateY() CSS function defines a transformation that rotates an element around the ordinate (vertical axis) without deforming it. Its result is a <transform-function> data type.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

The axis of rotation passes through an origin, defined by the transform-origin CSS property.

注意： rotateY(a) 相当于 rotate3d (0, 1, 0, a) .

注意： Unlike rotations in the 2D plane, the composition of 3D rotations is usually not commutative. In other words, the order in which the rotations are applied impacts the result.

句法

The amount of rotation created by rotateY() is specified by an <angle> . If positive, the movement will be clockwise; if negative, it will be counter-clockwise.

rotateY(a)
					

值

a

是 <angle> representing the angle of the rotation. A positive angle denotes a clockwise rotation, a negative angle a counter-clockwise one.

Cartesian coordinates on ℝ 2	Homogeneous coordinates on ℝℙ 2	Cartesian coordinates on ℝ 3	Homogeneous coordinates on ℝℙ 3
This transformation applies to the 3D space and can't be represented on the plane.		$\left(\begin{array}{ccc}cos(a)& 0& sin(a)\\ 0& 1& 0\\ -sin(a)& 0& cos(a)\end{array}\right)$	$\left(\begin{array}{cccc}cos(a)& 0& sin(a)& 0\\ 0& 1& 0& 0\\ -sin(a)& 0& cos(a)& 0\\ 0& 0& 0& 1\end{array}\right)$

范例

HTML

<div>Normal</div>
<div class="rotated">Rotated</div>
					

CSS

div {
  width: 80px;
  height: 80px;
  background-color: skyblue;
}
.rotated {
  transform: rotateY(60deg);
  background-color: pink;
}
					

结果

规范

规范	状态	注释
CSS Transforms Level 2 The definition of 'rotateY()' in that specification.	编者草案	初始定义

浏览器兼容性

Please see the <transform-function> data type for compatibility info.

另请参阅

• transform
• <transform-function>

元数据

• 最后修改： 2020 年 11 月 3 日

相关话题

1. CSS
2. CSS 参考