jQuery .keypress &.keydown .which

jQuery .keypress amp; .keydown .which(jQuery .keypress amp;.keydown .which)

问题描述

好的，.keypress 和 .keydown/.keyup 有什么区别?目前我正在使用 .keydown ，它为我的键返回 38 的 .which 值，现在如果我将其更改为 .keypress 它为同一个键返回 109 的值.有什么区别?为什么同一个键的值不同?

Ok so what is the difference in .keypress and .keydown/.keyup? At present I am using .keydown which returns a .which value of 38 for my key, now if i change it to .keypress it returns a value of 109 for that same key. What is the difference and why are the values different for the same key?

推荐答案

如果你按下一个按钮，它会触发一个 keydown 并释放它会触发一个 keyup.keypress 通常介于这两者之间.

If you press a button it fires a keydown and releasing it fires a keyup. The keypress usually comes between those two.

keydown 和 keyup 讨论哪个 key 已更改.keypress 告诉该键代表哪个字符.

keydown and keyup talk about which key has been changed. keypress tells which character that key represents.

请注意，这完全取决于浏览器！

Note that this is all browser-dependent!

请参阅这篇文章，了解在不同浏览器上实现的关键事件之间的差异.

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