In js, the regular expression is used to search for letters and numbers.

In js, the regular expression is used to search for letters and numbers.

Let's not talk about it. Let's take a look at how to use regular expressions to search for letters and numbers in Javascript. The specific code is as follows:

<! Doctype html> 
The following describes how to use a regular expression to verify that the password contains numbers and letters.
The script must contain at least one digit and one letter as follows:
Function CheckPassWord (password) {// The password must contain numbers and letters var str = password; if (str = null | str. length <8) {return false;} var reg = new RegExp (/^ (?! [^ A-zA-Z] + $ )(?! \ D + $)/); if (reg. test (str) return true ;}
It must contain numbers and letters, and cannot contain special symbols. The script method is as follows:
Function CheckPassWord (password) {// it must be a letter with a number and a length of no less than 8 characters var str = password; if (str = null | str. length <8) {return false;} var reg1 = new RegExp (/^ [0-9A-Za-z] + $/); if (! Reg1.test (str) {return false;} var reg = new RegExp (/[A-Za-z]. * [0-9] | [0-9]. * [A-Za-z]/); if (reg. test (str) {return true;} else {return false ;}}
Now, it's over. I hope it will help you!