点键无法使用ASCII字符 [英] Dot key is not working in ascii characters

问题描述

大家好，
我有一个JavaScript函数，该函数用于验证文本框以仅接受数字值，但是当我要编写34.45时，点在其中不起作用.
应该怎么解决.点的ASCII字符是46.
但是指定后，它不起作用.

Hello All,
I have a JavaScript function that is used to validate a text box to accept only numeric values but when i want to write 34.45 point is not working in it.
What should be the solution. ASCII character for point is 46.
But after specifying it ,it doesn''t work.

function isNumeric(keyCode)
{
   return ((keyCode >= 48 && keyCode <= 57) || (keyCode ==46)||(keyCode == 8))
}

推荐答案

这显然无法正常工作，它也将接受5.4.5.33. Javascript支持正则表达式，这就是您应该使用的.如果您使用的是ASP.NET，请使用正则表达式验证器，即使只是查看源代码并查看其工作原理也是如此.

This obviously will not work as if it does, it will accept 5.4.5.33, too. Javascript supports regular expressions, that''s what you should use. If you''re using ASP.NET, use a regex validator, even if it''s just to look at the source and see how they work.

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