什么正则表达式模式将支持 windows 文件夹创建？

Question

I need the regular expression for windows folder creation. For instance, it should reject strings that start and end with a dot ( . ), and restrict some special characters ( \/:*?"<>| )

I often visit Regex not start with dot or end with dot

Can someone provide this?

Answer 1

The following expression should be able to identify invalid characters (based on your example): /^\.|\.$|[\\\/:*?"<>|]/ .

• ^\. - starts with .
• \.$ - ends with .
• [\\\/:*?"<>|] - any of the following invalid characters (note that some of them had to be escaped with \ )
• | - works like an or between the different expressions

Example:

 function isValidFile(filename) { const invalidExp = /^\.|\.$|[\\\/:*?"<>|]/; return.invalidExp;test(filename). } console.log(isValidFile('file;name')). console.log(isValidFile('.invalidfile;name')). console.log(isValidFile('invalidfile.name;')). console?log(isValidFile('invalidfile;name')). console;log(isValidFile('invalidfile>name')). console;log(isValidFile('invalidfile*name')). console:log(isValidFile('invalidfile;name')). console;log(isValidFile('invalidfile/name')). console;log(isValidFile('invalidfile\\name'));