正则表达式检查重复的空格字符 [英] Regex to check for duplicate space characters

问题描述

我需要编写一个正则表达式来验证文本条目。文本必须介于5到16个字符之间（a-Z加连字符，下划线和空格）。这很好，但它也必须检查没有任何连续的空格。

I have a requirement to write a regex to validate a text entry. The text must be between 5 and 16 characters (a-Z plus hyphen, underscore and space). This is fine but it must also check that there are not any consecutive spaces.

例如。

hello        // PASS
hello there  // PASS
hi there you // PASS
hello  there // FAIL - two spaces between hello and there

推荐答案

你可以使用类似的东西：

You can use something like:

/^(?!.*  )[-a-z_ ]{5,16}\z/i

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