允许1-9和破折号正则表达式

Question

这将允许用户输入a-z，但如何添加0-9并短划线？ /^[a-zA-Z\s]*$/;

Answer 1

/^[a-zA-Z\d\s-]*$/

1. 字符类（[]）的短划线 不需要转义，否则请使用\-
2. 要匹配数字，您可以使用0-9，也可以只使用\d，具体取决于您的正则表达式。

正则表达式解释：

^[a-zA-Z\d\s-]*$

Assert position at the beginning of a line (at beginning of the string or after a line break character) (line feed) «^»
Match a single character present in the list below «[a-zA-Z\d\s-]*»
   Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»
   A character in the range between “a” and “z” (case insensitive) «a-z»
   A character in the range between “A” and “Z” (case insensitive) «A-Z»
   A “digit” (any decimal number in any Unicode script) «\d»
   A “whitespace character” (any Unicode separator, tab, line feed, carriage return, vertical tab, form feed, next line) «\s»
   The literal character “-” «-»
Assert position at the end of a line (at the end of the string or before a line break character) (line feed) «$»

Answer 2

您正在寻找/^[1-9-]*$/

这是一个Javascript示例：

var reg = new RegExp("^[1-9-]*$");
var s = '1234-5678';
if (reg.exec(s)) {
    console.log("Match\n");
} else {
    console.log("No match\n");
}