Window: transitionstart event

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规范
浏览器兼容性
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这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

transitionstart event is fired when a CSS transition has actually started, i.e., after any transition-delay has ended.

冒泡	Yes
可取消	No
接口	`TransitionEvent`
事件处理程序特性	`GlobalEventHandlers.ontransitionstart`

The original target for this event is the 元素 that had the transition applied. You can listen for this event on the Window interface to handle it in the capture or bubbling phases. For full details on this event please see the page on HTMLElement: transitionstart .

范例

This code adds a listener to the transitionstart event:

window.addEventListener('transitionstart', () => {
  console.log('Started transitioning');
});

一样，但使用 ontransitionstart property instead of addEventListener() :

window.ontransitionrun = () => {
  console.log('Started transitioning');
};

See a live example of this event.

规范

规范	状态	注释
CSS Transitions The definition of 'transitionstart' in that specification.	工作草案	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
`transitionstart` event	Chrome No	Edge No	Firefox 53	IE ?	Opera ?	Safari 13.1 13.1 12 Disabled Disabled From version 12: this feature is behind the `Web 动画` preference and the `CSS Animations via Web Animations` preference.	WebView Android No	Chrome Android No	Firefox Android 53	Opera Android ?	Safari iOS 13.4 13.4 12 Disabled Disabled From version 12: this feature is behind the `Web 动画` preference and the `CSS Animations via Web Animations` preference.	Samsung Internet Android No

图例

完整支持
不支持
兼容性未知 ?
用户必须明确启用此特征。

另请参阅

GlobalEventHandlers.ontransitionstart event handler
TransitionEvent interface
CSS properties: transition , transition-delay , transition-duration , transition-property , transition-timing-function
相关事件： transitionend , transitionrun , transitioncancel
此事件在 HTMLElement 目标： transitionstart
此事件在 Document 目标： transitionstart

元数据

最后修改： Feb 16, 2020

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范例

规范

浏览器兼容性

图例

另请参阅

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