Explore JavaScript regular expressions: learn about regex history, create patterns with special characters, parse data, and match passwords/emails, gaining comprehensive text processing skills.

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

You can't reuse the RegExp again if it is used once for a string. 

You can’t concatenate the values of variables with literal notation. 

Literal notation has not been optimized in JavaScript. 

The regular expression written using literal notation cannot be stored in a variable. 

Which of the following is a limitation of using literal notation to define a regular expression in JavaScript?

Which of the following is a limitation of using literal notation to define a regular expression in JavaScript?

Which of the following flags is used for the match to be done globally on the entire string? 

Which of the following flags is used for the match to be done globally on the entire string?

Select all the main components that comprise a regular expression.



Select all the main components that comprise a regular expression.

Which of the following regular expressions is used to match every possible
character in the ASCII table except the
newline character and the line ending
character?

Which of the following regular expressions is used to match every possible
character in the ASCII table except the
newline character and the line ending
character?

Which of the following cannot be matched by the following regular expression: `/LO\B/`?

Which of the following cannot be matched by the following regular expression: <code>/LO\B/</code>?

Which of the following quantifiers allows you to match anything repeating between zero and infinity?

Which of the following quantifiers allows you to match anything repeating between zero and infinity?

`$` is a type of conditional quantifier that matches something at the start of your string.

<code>$</code> is a type of conditional quantifier that matches something at the start of your string.

Which of the following flags allows the dot wildcard to also match new lines?

Which of the following flags allows the dot wildcard to also match new lines?

It’ll match the string, AA, only if it’s followed by the string BB.

It will match the string, AA, only if it’s not followed by BB. 

It will match the string, BB, only if it was preceded by AA.               

It will match the string, BB, only if it is not preceded by AA.               

Which of the following is an accurate description of the quantifier provided below?

`AA?<=BB`

Which of the following is an accurate description of the quantifier provided below?
<code>AA?&lt;=BB</code>

Which of the following is used in a regular expression to make it a non-capturing group?

Which of the following is used in a regular expression to make it a non-capturing group?

Challenge yourself by answering some questions regarding the anatomy of regular expressions.


The Beginning of Regular Expressions

The Anatomy of Regular Expressions

The RegExp Object

Thinking in Regular Expressions

Regular Expressions in the Wild

Wrapping Up

Quiz on the Anatomy of Regular Expressions