正则表达式速查表
带示例的可搜索正则表达式语法参考。
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带示例的可搜索正则表达式语法参考。
带示例的可搜索正则表达式语法参考。
带示例的可搜索正则表达式语法参考。
^Start of string or line$End of string or line\bWord boundary\BNot word boundary\dDigit [0-9]\DNon-digit\wWord char [a-zA-Z0-9_]\WNon-word char\sWhitespace\SNon-whitespace[abc]a, b, or c[^abc]Not a, b, or c[a-z]a through z[A-Z0-9]Uppercase or digit*0 or more+1 or more?0 or 1 (optional)*?Lazy 0 or more+?Lazy 1 or more??Lazy 0 or 1{3}Exactly 3{3,}3 or more{3,6}3 to 6(abc)Capture group(?:abc)Non-capture group(?=abc)Positive lookahead(?!abc)Negative lookahead(?<=abc)Positive lookbehind(?<!abc)Negative lookbehind(a|b)a or b.Any char except newline\nNewline\tTab\\Literal backslash(?i)Case insensitive (flag i)^[\w.-]+@[\w.-]+\.\w{2,}$Email^https?:\/\/[^\s]+$URL^\d{4}-\d{2}-\d{2}$ISO Date^\+?[1-9]\d{7,14}$Phone number^(?=.*[A-Z])(?=.*\d).{8,}$Strong password