什么构成用户手势 [英] what constitues user gesture
问题描述
我最近为javascript编程了一个菜单界面，该界面可让您动态地向其添加选项，并且大多数情况下可与mouseEnter Events一起使用.我在请求/退出全屏上添加了一些基本的视频控件，这些控件在大多数情况下都会在其中一次显示Failed to execute 'requestFullscreen' on 'Element': API can only be initiated by a user gesture.时在这些mouseEnter事件之一上触发，但是(奇怪的部分:)有时会起作用，而且我不确定浏览器api如何决定动作是用户手势还是不是手势，谢谢您的帮助
I recently programmed a menu interface for javascript that lets you dynamically add options to it and mostly works with mouseEnter Events . I thne added some basic video Controls to it with request/exit Fullscreen that trigger on one of these mouseEnter events most of the time it displays Failed to execute 'requestFullscreen' on 'Element': API can only be initiated by a user gesture. however (weird part :) sometimes it works and im not sure how the browser api decides wether an action is a user gesture or not oO any help would be appreciated thanks
推荐答案
以下是可以触发用户通过"的事件的列表. spec.whatwg.org/multipage/interaction.html#triggered-by-user-activation"rel =" noreferrer>规范定义的:
Here is the list of events that can trigger "by user activation" as defined by the specs:
- 更改
- 点击
- 上下文菜单
- dblclick
- 鼠标
- pointerup
- 重置
- 提交
- touchend
- change
- click
- contextmenu
- dblclick
- mouseup
- pointerup
- reset
- submit
- touchend
这是您的错误消息所指的，当他们说用户手势"时.
This is what your error message refers to when they say "a user gesture".
mouseenter不属于该列表.
最有可能的是，当它起作用时，是因为其中一个事件发生的时间少于几毫秒(IIRC目前在Chrome中是50毫秒).
Most likely, when it worked, it was because one of those event did happen less than a few ms before (IIRC it's 50ms in Chrome currently).
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