Learn Basic JavaScript
This course features freeCodeCamp's popular JavaScript curriculum recorded as interactive Scrimba screencasts.
2.6 hrs
Content
About
Basic JavaScript Intro
Comment Your JavaScript Code
Frontend Career Path
Declare JavaScript Variables
Storing Values with the Assignment Operator
Initializing Variables with the Assignment Operator
Understanding Uninitialized Variables
Understanding Case Sensitivity in Variables
Add Two Numbers with JavaScript
Subtract One Number from Another with JavaScript
Multiply Two Numbers with JavaScript
Divide One Number by Another with JavaScript
Increment a Number with JavaScript
Decrement a Number with JavaScript
Create Decimal Numbers with JavaScript
Multiply Two Decimals with JavaScript
Divide One Decimal by Another with JavaScript
Finding a Remainder in JavaScript
Compound Assignment With Augmented Addition
Compound Assignment With Augmented Subtraction
Compound Assignment With Augmented Multiplication
Compound Assignment With Augmented Division
Declare String Variables
Escaping Literal Quotes in Strings
Quoting Strings with Single Quotes
Escape Sequences in Strings
Concatenating Strings with Plus Operator
Concatenating Strings with the Plus Equals Operator
Constructing Strings with Variables
Appending Variables to Strings
Find the Length of a String
Use Bracket Notation to Find the First Character in a String
Understand String Immutability
Use Bracket Notation to Find the Nth Character in a String
Use Bracket Notation to Find the Last Character in a String
Use Bracket Notation to Find the Nth-to-Last Character in a String
Word Blanks
Store Multiple Values in one Variable using JavaScript Arrays
Nest one Array within Another Array
Access Array Data with Indexes
Modify Array Data With Indexes
Access Multi-Dimensional Arrays With Indexes
Manipulate Arrays With push()
Manipulate Arrays With pop()
Manipulate Arrays With shift()
Manipulate Arrays With unshift()
Shopping List
Write Reusable JavaScript with Functions
Passing Values to Functions with Arguments
Global Scope and Functions
Local Scope and Functions
Global vs. Local Scope in Functions
Return a Value from a Function with Return
Understanding Undefined Value returned from a Function
Assignment with a Returned Value
Stand in Line
Understanding Boolean Values
Use Conditional Logic with If Statements
Comparison with the Equality Operator
Comparison with the Strict Equality Operator
Practice comparing different values
Comparison with the Inequality Operator
Comparison with the Strict Inequality Operator
Comparison with the Greater Than Operator
Comparison with the Greater Than Or Equal To Operator
Comparison with the Less Than Operator
Comparison with the Less Than Or Equal To Operator
Comparisons with the Logical And Operator
Comparisons with the Logical Or Operator
Introducing Else Statements
Introducing Else If Statements
Logical Order in If Else Statements
Chaining If Else Statements
Golf Code
Selecting from Many Options with Switch Statements
Adding a Default Option in Switch Statements
Multiple Identical Options in Switch Statements
Replacing If Else Chains with Switch
Returning Boolean Values from Functions
Return Early Pattern for Functions
Counting Cards
Build JavaScript Objects
Accessing Object Properties with Dot Notation
Accessing Object Properties with Bracket Notation
Accessing Object Properties with Variables
Updating Object Properties
Add New Properties to a JavaScript Object
Delete Properties from a JavaScript Object
Using Objects for Lookups
Testing Objects for Properties
Manipulating Complex Objects
Accessing Nested Objects
Accessing Nested Arrays
Record Collection
Iterate with JavaScript While Loops
Iterate with JavaScript For Loops
Iterate Odd Numbers With a For Loop
Count Backwards With a For Loop
Iterate Through an Array with a For Loop
Nesting For Loops
Iterate with JavaScript Do...While Loops
Profile Lookup
Generate Random Fractions with JavaScript
Generate Random Whole Numbers with JavaScript
Generate Random Whole Numbers within a Range
Use the parseInt Function
Use the parseInt Function with a Radix
Use the Conditional (Ternary) Operator
Use Multiple Conditional (Ternary) Operators
Basic JavaScript Outro