在Javascript中，如何检测keydown&中的字符大小写（上/下）关键事件？ [英] In Javascript, How to detect the character case (upper/lower) in keydown & keyup events?

问题描述

我需要检测事件keydown和keyup中字符的大小写

I need to detect the case of characters in event keydown and keyup

$('body').keydown(
    function(event) {
        var charCode = (event.which) ? event.which : event.keyCode;
        var char = String.fromCharCode(charCode);
        console.log(char + " is down pressed");
    }
);

$('body').keyup(
    function(event) {
        var charCode = (event.which) ? event.which : event.keyCode;
        var char = String.fromCharCode(charCode);
        console.log(char + " is up pressed");
    }
);

你可以在这里试试： http://jsfiddle.net/8dqwW/

即使没有按下大写锁定，也总是返回大写字母。

You may try it here: http://jsfiddle.net/8dqwW/
It's always returning the upper case letter even if no caps lock is pressed.

如何在这两个事件中检测用它的情况按下的字母，无论是上限还是下限？

How can I detect the letter pressed with its case, either upper or lower in those two events ?

推荐答案

keyup 和 keydown 无法检测大写/小写。

只有 keypress 可以这样做！

keyup and keydown cannot detect the upper/lower case.
Only keypress can do so !

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