Check if String contains only Alphabets (Letters) and Numbers (Digits) using JavaScript

Here Mudassar Ahmed Khan has explained with an example, how to check if String contains only Alphabets (Letters) and Numbers (Digits) using JavaScript. This article will illustrate how to use Regular Expression which allows Alphabets (Letters) and Numbers (Digits) i.e. AlphaNumeric characters to filter out all unwanted characters using JavaScript.