javascript 正则表达式只允许连字符和数字
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Regex to allow hypen & number only
提问by Biki
I am using the RegEx ^[0-9]+$"to allow only digits.
I want to allow hyphens -& spaces also.
我使用正则表达式^[0-9]+$"只允许数字。我也想允许连字符-和空格。
Can any one help me to modify the RegEx to a proper one?
任何人都可以帮助我将 RegEx 修改为正确的吗？
I was using following JS code to achieve the same, but in this way if the user is copying & pasting the text then the key press is not getting accounted.
我正在使用以下 JS 代码来实现相同的目的，但通过这种方式，如果用户正在复制和粘贴文本，则按键不会被计算在内。
//Allowed characters are : 8 = Back space,
//9 = Horizontal tab, 27 = esc, 127 = Delete,
//13 = Enter digits = 48 to 57, 45 = hypen
$('#PostalCode').keypress(function (e) {
var key = (e.keyCode ? e.keyCode : e.which);
return (key == 8 || key == 9 || key == 127 || key == 27 || key == 13 || key == 45 || (key >= 48 && key <= 57));
});
回答by Sebastian Paaske T?rholm
You can add a -and space in the character class like so:
您可以-在字符类中添加一个和空格，如下所示：
^[0-9 -]+$
Be sure to put the -either in the back or front (as it won't be mistaken for a range, then), or escape it:
一定要把 放在-后面或前面（因为它不会被误认为是一个范围，然后），或者逃避它：
^[0-9 \-]+$
You could also use \dinstead of 0-9, as they're equivalent:
您也可以使用\d代替0-9，因为它们是等效的：
^[\d -]+$
回答by diEcho
use ^[\d-\s]+$to allow hyphens also
使用^[\d-\s]+$允许连字符也
