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

Let's make a simple interpreter! 

# Problem statement 
Write the regular expression which accepts the code that will allow us to declare a variable. For simplicity, the variable can only store the number data type. 

This regular expression should be able to match code that starts from `var`, then the variable name, then the assignment operator, `=`, followed by a value (number).

For example: 

```js
var myvariable = 2
``` 

# Conditions

Here are some conditions that you should keep in mind for this exercise:  

1. The variable name can only contain letters. 
2. The variable name can only contain the lowercase alphabet. 
3. The variable can only be assigned to a number value. 
4. There should be space between each of the following parts of the variable declaration statement:
    1. `var` keyword
    2. Variable name
    3. Assignment operator
    4. The value of number data type


>  All test cases should pass in order for the solution to be considered correct.

Good luck! 

Challenge yourself to write a regular expression for this fun exercise!

The Beginning of Regular Expressions

The Anatomy of Regular Expressions

The RegExp Object

Thinking in Regular Expressions

Regular Expressions in the Wild

Wrapping Up

Exercise: A Simple Interpreter