| character | describe |
|---|
| ^\d+$ | Match non-negative integers (positive integers + 0) |
| //Matches the integer ^\d+(\.\d+)?$ | Match non-negative floating-point numbers (positive floating-point numbers + 0) |
| ^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$ | //Match positive floating-point numbers |
| ^((-\d+(\.\d+)?)|(0+(\.0+)?))$ | Match non-positive floating-point numbers (negative floating-point numbers + 0) |
| ^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$ | //match negative floating-point numbers |
| ^(-?\d+(\.\d+)?$ | //match floating-point numbers |
| ^[A-Za-z]+$ | Match a string of 26 English letters |
| ^[A-Z]+$ | Matches a string of 26 English letters |
| ^[a-z]+$ | Matches a string of 26 lowercase letters |
| ^[A-Za-z0-9]+$ | Match a string of numbers and 26 letters |
| ^\w+$ | Matches a string consisting of numbers, 26 letters, or underscores |
| ^\w-]+(\.[\w-]+)*@\w-]+(\.[\w-]+)+$ | //match email address |
| ^[a-zA-z]+://匹配(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$ | //match url |
| [\u4e00-\u9fa5] | Regular expressions that match Chinese characters |
| [^\x00-\xff] | Match double-byte characters (including Chinese characters) |
| \n[\s| ]*\r | Regular expression that matches blank lines |
| /<(.*)>.*<\/>|<(.*)\/>/ | Regular expressions that match HTML tags |
| (^\s*)|(\s*$) | Regular expressions that match end-to-end spaces |
| \w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* | Regular expression for matching email addresses |
| ^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$ | Regular Expression Matching URL |
| ^[a-zA-Z][a-zA-Z0-9_]{4,15}$ | Match whether the account is legal (start with a letter, allow 5-16 bytes, allow alphanumeric underscores) |
| (\d{3}-|\d{4}-)?(\d{8}|\d{7})? | Match domestic phone numbers |
| ^[1-9]*[1-9][0-9]*$ | Match Tencent QQ number |
