获取按键的键值 [英] Get key value of a key pressed

问题描述

我找不到如何获得按键值的方法. 我目前有

I don't find how to get the value of a key pressed. I currently have

$('#info_price').bind('keydown',function(evt){
    alert(evt.keyCode);

但是当我按1而不是返回"1"时，它将返回"49".

but it return '49' when I press on 1 instead of returning '1'.

我知道键'1'的Ascii代码.

I'm aware that Ascii code of key '1'.

最终目标是使人们只能在输入中输入数字.所以我想检测非数字而不显示它们.

The final goal is to allow people to only write digit into the input. So i want to detect the non digit and not display them.

推荐答案

如注释中所述，它是ASCII代码.要将其作为角色，您可以这样做:

As it's told in comment it's ASCII code. To get it as character you can do:

alert(String.fromCharCode(evt.keyCode));

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