[JS/TS] how to write regular expressions? input form validation

1, Regular expression overview Regular expressions are patterns used to match character combinations in strings. In JavaScript, regular expressions are also objects. 2, How to create regular expressions Call the constructor of the RegExp object to create it const regexp=new RegExp(/123/); //123 is the regular expression content Creat ...

Posted by Ironmann00 on Sun, 31 Oct 2021 18:19:23 +0100