[英]How do you detect if a user has a keyboard via Javascript?
I'm building a site where I'm globally binding certain keys to shortcuts using the keyup
event. 我正在构建一个网站,我使用
keyup
事件将某些键全局绑定到快捷方式。 For example, if someone presses the A key, a menu opens. 例如,如果有人按下A键,则会打开一个菜单。
I don't want to bind these triggers on mobile devices (such as phones and tablets). 我不想在移动设备(如手机和平板电脑)上绑定这些触发器。 However, there's a number of people that use keyboards with their tablets.
但是,有很多人使用键盘和平板电脑。 How would I detect if a keyboard input exists via Javascript?
如何通过Javascript检测键盘输入是否存在? I know I can detect touch devices based on if
touchstart
exists, but that wouldn't work for people who are on tablets and have keyboards plugged in. I only want to bind the keyup
events if a keyboard is present. 我知道我能够基于触摸的设备如果
touchstart
存在,但不会对人谁是在平板电脑和有插上键盘工作。我只是想绑定keyup
事件如果键盘存在。 What is the best way to go about doing this? 这样做的最佳方法是什么?
Note: I know this is a nice-to-have, but I'd like to do it if possible. 注意:我知道这是一个很好的,但我想尽可能这样做。
Thanks in advance! 提前致谢!
您可以随时将一个catch-all事件处理程序附加到文档对象,该文档对象在用户点击任何键后懒洋洋地附加事件处理程序。
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