Javascript operators operators are used to perform

JavaScript Comments
Much like HTML, JavaScript also has a mechanism for including comments
(although much more convenient).
- Used for documentation or preventing code execution
- // - Single Line Comment
- /* */ - Multi-line comment.

Data Types
In programming, we often need to express different data within a program in
different ways. When working with variables and data within a program, you
need to be mindful of their types.
- JavaScript is a Weakly/Dynamically Typed Language
- Variables don't have an explicit type associated with them until runtime
- Auto Conversion of data can lead to unexpected behavior
- Ex: var a = 'some string' + 5;

JavaScript Types
JavaScript has a variety of data types available for use:
- Number
- String
- Boolean
- Array
- Object
- Function
- RegExps

JavaScript Number
Numerical data in JavaScript is represented with the Number data type.
- Examples:
- 1.0
- 1
- 1e-15
- 0.15 * 0.12
- You can perform mathematical operations on Number data types using the
operators discussed previously
- The Number type is a 64 bit Floating Point value
- Floating point precision errors

JavaScript String
In programming, a String is a collection of text characters, normally enclosed in
quotation marks.
- Ex: "Hello World!"
- No char data type
- Can use single or double quotes to define a string
- Ex: 'Hello World!'
- Some characters are reserved
- Ex: "The man said "Hello" to the boy" - Won't Compile
- To correct it, either use single quotes, or use the \ character to escape the quotes
- Ex: "I \"will\" compile!";

JavaScript String
To concatenate strings, you can use the + operator.
- Ex: var a = "Hello " + "World!";
- You can use this to split strings onto multiple lines:
- var a = "Hello "
- + "World!";
- You can also use the \, but that's not recommended.
- You can concatenate (join) strings using the + operator.

JavaScript String
Strings have a variety of methods and properties that can be used to operate
on the strings.
- Strings have a length property, that can be accessed to get the length of
the string
- Ex: console.log('Hello World'.length);

JavaScript String Methods
Some noteworthy String Methods (these do not modify the original string, they return new values):
- someString.indexOf(str) - Check if str exists in someString
- someString.substring(startIndex, endIndex) - Extract the string between the specified indices
- someString.toUpper/LowerCase() - Returns a modified version of the string
- someString.replace(origStr, newStr) - Replace orgString instances with newStr within
someString
- someString.trim() - Remove whitespace characters from the start and end of the string.
- someString.split(delim) - Split the string into an array around the delim string
- someString.charAt(index) - Return the character at position index

JavaScript Boolean
In programming, booleans are used to indicate truthiness and falsiness,
normally used for conditional programming logic
-