JavaScript checks whether a string is a combination of numbers and characters.

JavaScript is used to determine whether a specified string is a mix of characters and numbers. We should first determine whether the specified string is a character. Let's first look at Js to check whether the specified input is a character:

 

Let's take a look at the complete JavaScript code for judging the mixed numbers and characters:

 

It is usually seen in some password input, which is used to check whether the password entered by the user is a complex character. This can be used.