Introduction to Regular Expressions
Explore the fundamentals of regular expressions and how to apply them for validating user input in auto-validating forms. Understand pattern matching in JavaScript and the balance between code readability and performance in frontend development.
We'll cover the following...
We'll cover the following...
Time to apply specific rules so that each field only errors if the user input breaks the rules for that particular field.
Regular Expressions
Our rules are for strings, and the only robust method of string validation is through regular expressions. If you haven’t heard of it, a regular expression (shortened to ...