bite_size_js.tar.gz

RunNode12

Regular Expressions, also known as Regex, come in handy in a multitude of text processing scenarios. Regex defines a search pattern using symbols and allows you to find matches within strings. The applications of this span from software engineering to data science and beyond.

In this course, you will begin with an introduction to regex, its history, and various types of regular expressions. 

You will then learn how to create your own regular expressions using various techniques and special characters. In the latter half of the course, you will explore RegExp Objects, how to parse data, turn phrases into an array of strings, and lastly password and email pattern matching.

By the end of this course, you will be a regular expressions expert.

JavaScript Regular Expressions in Detail

## Using the `exec` method 

The `exec` method executes a search in a specified string to the full extent of the expression. This means that if there are capturing groups, they’ll also be taken into account.


Just like with our previous example, this method makes use of the internal state as long as you add the global or sticky flags. So, on every subsequent call to the method, the `lastIndex` property will be updated, and a new match will be returned. If these flags aren’t used, then, no matter how many times you call the method, the same first match will always be returned.





# Using the `exec` method 

The `exec` method executes a search in a specified string to the full extent of the expression. This means that if there are capturing groups, they’ll also be taken into account.


Just like with our previous example, this method makes use of the internal state as long as you add the global or sticky flags. So, on every subsequent call to the method, the `lastIndex` property will be updated, and a new match will be returned. If these flags aren’t used, then, no matter how many times you call the method, the same first match will always be returned.





Learn about the exec method, which is called on RegExp objects by studying the example provided in this lesson. 

The Beginning of Regular Expressions

The Anatomy of Regular Expressions

The RegExp Object

Thinking in Regular Expressions

Regular Expressions in the Wild

Wrapping Up

The exec Method

Using the `exec` method