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- Challenge Access Array Data with Indexes
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- Challenge Accessing Nested Arrays In Json
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- Challenge Accessing Objects Properties With Bracket Notation
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- Challenge Add a Negative Margin to an Element
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- Challenge Add Alt Text to an Image for Accessibility
- Challenge Add Borders Around your Elements
- Challenge Add Different Margins to Each Side of an Element
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- Challenge Add Elements within your Bootstrap Wells
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- Challenge Add ID Attributes to Bootstrap Elements
- Challenge Add Images to your Website
- Challenge Add New Properties to a JavaScript Object
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- Challenge Add Two Numbers with JavaScript
- Challenge Add your JavaScript Slot Machine Slots
- Challenge Adding A Default Option In Switch Statements
- Challenge Adjust the Margin of an Element
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- Challenge Appending Variables to Strings
- Challenge Apply the Default Bootstrap Button Style
- Challenge Assignment With A Returned Value
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- Challenge Assignment with Minus Equals
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- Challenge Bring your JavaScript Slot Machine to Life
- Challenge Build JavaScript Objects
- Challenge Call out Optional Actions with Button Info
- Challenge Center Text with Bootstrap
- Challenge Chaining If Else Statements
- Challenge Change Text Inside an Element Using jQuery
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- Challenge Change the Color of Text
- Challenge Change the CSS of an Element Using jQuery
- Challenge Change the Font Size of an Element
- Challenge Check Radio Buttons and Checkboxes by Default
- Challenge Check the Length Property of a String Variable
- Challenge Clone an Element Using jQuery
- Challenge Comment out HTML
- Challenge Comment your JavaScript Code
- Challenge Comparison With The Equality Operator
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- Challenge Comparisons With The Logical And Operator
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- Challenge Concatenate Strings with .concat
- Challenge Concatenating Strings with Plus Operator
- Challenge Concatenating Strings with the Plus Equals Operator
- Challenge Condense arrays with reduce
- Challenge Construct JavaScript Objects with Functions
- Challenge Constructing Strings with Variables
- Challenge Convert JSON Data to HTML
- Challenge Count Backwards With a For Loop
- Challenge Create a Block Element Bootstrap Button
- Challenge Create a Bootstrap Button
- Challenge Create a Bootstrap Headline
- Challenge Create a Bootstrap Row
- Challenge Create a Bulleted Unordered List
- Challenge Create a Class to Target with jQuery Selectors
- Challenge Create a Custom Heading
- Challenge Create a Form Element
- Challenge Create a JavaScript Slot Machine
- Challenge Create a Set of Checkboxes
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- Challenge Create a Text Field
- Challenge Create an Ordered List
- Challenge Create Bootstrap Wells
- Challenge Create Decimal Numbers with JavaScript
- Challenge Declare JavaScript Objects as Variables
- Challenge Declare JavaScript Variables
- Challenge Declare String Variables
- Challenge Decrement a Number with Javascript
- Challenge Delete HTML Elements
- Challenge Delete Properties from a JavaScript Object
- Challenge Delete your jQuery Functions
- Challenge Disable an Element Using jQuery
- Challenge Ditch Custom CSS for Bootstrap
- Challenge Divide One Number by Another with JavaScript
- Challenge Escape Sequences in Strings
- Challenge Escaping Literal Quotes in Strings
- Challenge Fill in the Blank with Placeholder Text
- Challenge Filter Arrays with filter
- Challenge Find Numbers with Regular Expressions
- Challenge Find the Length of a String
- Challenge Find White Space with Regular Expressions
- Challenge Finding a Remainder in Javascript
- Challenge Generate Random Fractions with JavaScript
- Challenge Generate Random Whole Numbers with JavaScript
- Challenge Generate Random Whole Numbers within a Range
- Challenge Get Geo location Data
- Challenge Get JSON with the jQuery getJSON Method
- Challenge Give a Background Color to a Div Element
- Challenge Give Each Element a Unique ID
- Challenge Give your JavaScript Slot Machine some stylish images
- Challenge Global Scope And Functions
- Challenge Global Vs Local Scope In Functions
- Challenge Headline with the h2 Element
- Challenge House our page within a Bootstrap Container Fluid Div
- Challenge Import a Google Font
- Challenge Increment a Number with Javascript
- Challenge Inform with the Paragraph Element
- Challenge Inherit Styles from the Body Element
- Challenge Initializing Variables with the Equal Operator
- Challenge Introducing Else If Statements
- Challenge Introducing Else Statements
- Challenge Introducing Javascript Object Notation Json
- Challenge Invert Regular Expression Matches with JavaScript
- Challenge Iterate Odd Numbers With a For Loop
- Challenge Iterate over Arrays with map
- Challenge Iterate Through An Array With A For Loop
- Challenge Iterate with JavaScript For Loops
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- Challenge Join Strings with .join
- Challenge Label Bootstrap Buttons
- Challenge Label Bootstrap Wells
- Challenge Learn how Script Tags and Document Ready Work
- Challenge Line up Form Elements Responsively with Bootstrap
- Challenge Link to External Pages with Anchor Elements
- Challenge Local Scope And Functions
- Challenge Make Circular Images with a Border Radius
- Challenge Make Dead Links using the Hash Symbol
- Challenge Make Images Mobile Responsive
- Challenge Make Instances of Objects with a Constructor Function
- Challenge Make Object Properties Private
- Challenge Make Unique Objects by Passing Parameters to our Constructor
- Challenge Manipulate Arrays With pop()
- Challenge Manipulate Arrays With push()
- Challenge Manipulate Arrays With shift()
- Challenge Manipulate Arrays With unshift()
- Challenge Manipulate JavaScript Objects
- Challenge Modify Array Data With Indexes
- Challenge Multiple Identical Options In Switch Statements
- Challenge Multiply Two Numbers with JavaScript
- Challenge Nest an Anchor Element within a Paragraph
- Challenge Nest Many Elements within a Single Div Element
- Challenge Nest one Array within Another Array
- Challenge Nesting For Loops
- Challenge Override All Other Styles by using Important
- Challenge Override Class Declarations by Styling ID Attributes
- Challenge Override Class Declarations with Inline Styles
- Challenge Override Styles in Subsequent CSS
- Challenge Passing Values To Functions With Arguments
- Challenge Perform Arithmetic Operations on Decimals with JavaScript
- Challenge Prefilter JSON
- Challenge Prioritize One Style Over Another
- Challenge Quoting Strings with Single Quotes
- Challenge Remove an Element Using jQuery
- Challenge Remove Classes from an element with jQuery
- Challenge Render Images from Data Sources
- Challenge Replacing If Else Chains With Switch
- Challenge Responsively Style Checkboxes
- Challenge Responsively Style Radio Buttons
- Challenge Return A Value From A Function With Return
- Challenge Return Early Pattern For Functions
- Challenge Returning Boolean Values From Functions
- Challenge Reverse Arrays with reverse
- Challenge Save your Code Revisions Forever with Git
- Challenge Say Hello to HTML Elements
- Challenge Selecting From Many Options With Switch Statements
- Challenge Set the Font Family of an Element
- Challenge Set the ID of an Element
- Challenge Sift through Text with Regular Expressions
- Challenge Size your Images
- Challenge Solution Template
- Challenge Sort Arrays with sort
- Challenge Specify How Fonts Should Degrade
- Challenge Split Strings with split
- Challenge Split your Bootstrap Row
- Challenge Store Multiple Values in one Variable using JavaScript Arrays
- Challenge Storing Values with the Equal Operator
- Challenge Style Multiple Elements with a CSS Class
- Challenge Style Text Inputs as Form Controls
- Challenge Style the HTML Body Element
- Challenge Subtract One Number from Another with JavaScript
- Challenge Target a Specific Child of an Element Using jQuery
- Challenge Target Elements by Class Using jQuery
- Challenge Target Elements by ID Using jQuery
- Challenge Target Even Numbered Elements Using jQuery
- Challenge Target HTML Elements with Selectors Using jQuery
- Challenge Target the Children of an Element Using jQuery
- Challenge Target the Parent of an Element Using jQuery
- Challenge Target the same element with multiple jQuery Selectors
- Challenge Taste the Bootstrap Button Color Rainbow
- Challenge Testing Objects For Properties
- Challenge Trigger Click Events with jQuery
- Challenge Turn an Image into a Link
- Challenge Uncomment HTML
- Challenge Understand Boolean Values
- Challenge Understand String Immutability
- Challenge Understanding Case Sensitivity in Variables
- Challenge Understanding Uninitialized Variables
- Challenge Updating Object Properties
- Challenge Use a CSS Class to Style an Element
- Challenge Use Abbreviated Hex Code
- Challenge Use an ID Attribute to Style an Element
- Challenge Use appendTo to Move Elements with jQuery
- Challenge Use Bracket Notation to Find the First Character in a String
- Challenge Use Bracket Notation to Find the Last Character in a String
- Challenge Use Bracket Notation to Find the Nth Character in a String
- Challenge Use Bracket Notation to Find the Nth to Last Character in a String
- Challenge Use Clockwise Notation to Specify the Margin of an Element
- Challenge Use Clockwise Notation to Specify the Padding of an Element
- Challenge Use Comments to Clarify Code
- Challenge Use Conditional Logic with If Else Statements
- Challenge Use CSS Selectors to Style Elements
- Challenge Use Hex Code for Specific Colors
- Challenge Use Hex Code for Specific Shades of Gray
- Challenge Use Hex Code to Color Elements Blue
- Challenge Use Hex Code to Color Elements Gray
- Challenge Use Hex Code to Color Elements Green
- Challenge Use Hex Code to Color Elements Red
- Challenge Use Hex Code to Color Elements White
- Challenge Use Hex Code to Mix Colors
- Challenge Use HTML5 to Require a Field
- Challenge Use jQuery to Modify the Entire Page
- Challenge Use Responsive Design with Bootstrap Fluid Containers
- Challenge Use RGB to Color Elements Blue
- Challenge Use RGB to Color Elements Gray
- Challenge Use RGB to Color Elements Green
- Challenge Use RGB to Color Elements Red
- Challenge Use RGB to Color Elements White
- Challenge Use RGB to Mix Colors
- Challenge Use RGB values to Color Elements
- Challenge Use Spans for Inline Elements
- Challenge Use the Bootstrap Grid to Put Elements Side By Side
- Challenge Use the Javascript Console
- Challenge Using Objects For Lookups
- Challenge Using typeof
- Challenge Warn your Users of a Dangerous Action
- Challenge Write Reusable JavaScript with Functions
- Check if an element is hidden using jQuery
- Check if element is hidden js or jquery
- Checkpoint Convert Celsius to Fahrenheit
- Checkpoint Counting Cards
- Checkpoint Golf Code
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- Checkpoint Word Blanks
- Clear Your Browser's Local Storage
- Clone A Specific Branch
- code case
- code formatting
- Code of Conduct
- Coding Help
- CONTRIBUTING
- Contributions Guide with Typo Demo
- Create, Upload and Link Animated GIF Image
- Creating a new API endpoint
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- Creating a new route
- css
- css selectors
- Currying
- dau
- debugging
- Debugging JavaScript with Browser DevTools
- Deleting A Branch
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- Django Start Project
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- equality vs identity
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- For loops Explained
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- How Free Code Camp works
- How FreeCodeCamp Nonprofit Projects work
- How GitHub Issue Moderators AKA Issue Mods Work
- How JSONP is different from JSON
- How Long Free Code Camp Takes
- How to add Free Code Camp to my LinkedIn profile
- How to best use the Global Control Shortcuts for Mac
- How to clear specific values from your browser's local storage
- How to clone the FreeCodeCamp website on a Windows pc
- How To Contribute To The Wiki
- How to create a Campsite for your city
- How To Create A Pull Request for Free Code Camp
- How to deploy a website without writing any code at all
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- How to Get Help on Gitter
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- How to get the MEAN stack running locally on OSX
- How To Install Clementine
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- How to know who is in charge of your Campsite on Facebook
- How To Log In To Your Local FCC Site
- how to post code
- How to Rename a Local Branch
- How to share your workspace selfie with FreeCodeCamp on instagram
- How to start when you are stuck (I)
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- How to use the Free Code Camp Wiki
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- Html and CSS Cheat Sheet
- html elements
- If Free Code Camp is free, how does it make money
- Ignore Files Committed To Git Repo
- IIFE
- Install Django Flask
- Installing WordPress Locally on Mac
- Intro to Yeoman Angular Fullstack Back End Projects
- isLoggedInAsync
- Java
- Java Basics
- Java Introduction
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- Java Resources
- Javascript Callback Functions
- JavaScript Truth Table
- jQuery
- js arguments
- js Array prototype concat
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- js Boolean
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- JS Get Timestamp
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- JS Regex Resources
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- js String prototype toLowerCase
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- js ternary
- js truthy
- js undefined
- jsonp
- Know it all
- Known Issues With Codepen
- latex
- Learn the basics of the VIM editor
- Linking Your Account with GitHub
- Linux
- List of Free Code Camp city based Campsites
- Loop Protect
- Map
- materializecss framework as a bootstrap alternative
- Math.max
- Math.min
- Math.pow
- medium example wiki article
- More useful APIs
- Mostaganem
- Object.getOwnPropertyNames
- Object.keys
- October 2015 Improvements
- October 2015 Summit Agenda
- Official Free Code Camp Chat Rooms
- ooda
- Other resources that Free Code Camp recommends to nonprofits
- Page redirects using javascript
- Pair programming and why it is special
- parseInt
- Permutations
- Php
- Politica De Honestidad Academica
- Programming Fundamental
- Programming Methodology
- Promises
- Pseudoclassical class definition OOp
- Pull Request Contribute
- PULL_REQUEST_TEMPLATE
- Python
- Python Basics
- Python Functions
- Python Introduction
- Python More Builtin Types
- Python Operators
- Python Resources
- Quick tip keep data in sync
- README
- Reduce made easy
- Refresh Your Browser Cache
- Registering your Nonprofit to Raise Donations through Free Code Camp Commit
- Restrict a page to authenticated users
- RTFM
- Ruby
- Ruby Introduction
- Run Apache Server On A Mac
- Saturday Summit August 2015
- Saturday Summit December 2015
- Saturday Summit November 2015
- Saturday Summit October 2015
- Searching for Your Issue on Github
- Seed data
- Select Issues for Contributing Using Labels
- Setting Up A React ES6 Webpack Project
- Site Improvements August 2015
- Site Improvements October 2015
- Slack
- Spanish Translation Terminology
- staging
- Start Here
- Streaks
- Stream Your Coding Sessions on Twitch.tv
- String.fromCharCode
- String.length
- Swashbuckle Swagger Operation Alphabetical Order
- The main advantages of Free Code Camp
- The Return Early Pattern
- Tips on How To Become A Good Pair Programmer
- topic
- Translating Free Code Camp into Your Native Language
- Translations Guide
- Twitch
- up_and_running_with_sass
- update
- Updates February 11 2016
- using anonymous self executing functions for private namespacing in your js apps
- Using browsec for securing your connection to fcc
- Using Github Pages for your front end development projects
- video demo
- wat
- Web Development in Python
- Web Resources
- What exactly Free Code Camp does
- What pair programming is and why it is special
- What the main advantages of Free Code Camp are
- What the style guide for Algorithms is
- What to do if you speak a language that Free Code Camp does not yet support
- What you will learn, and in what sequence you will learn it
- Why does Free Code Camp use JavaScript instead of Ruby or Python
- Why you need Free Code Camp
- Why You Should Try Pair Programming
- wiki js template
- Wiki Style Guide
- World Language Chat Rooms
- Write and Run ES6 Code in Browser
- writing a markdown file using atom
- Writing great git commit message
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New to Free Code Camp?
JS Concepts
JS Language Reference
- arguments
- Array.prototype.filter
- Array.prototype.indexOf
- Array.prototype.map
- Array.prototype.pop
- Array.prototype.push
- Array.prototype.shift
- Array.prototype.slice
- Array.prototype.some
- Array.prototype.toString
- Boolean
- for loop
- for..in loop
- for..of loop
- String.prototype.split
- String.prototype.toLowerCase
- String.prototype.toUpperCase
- undefined
Other Links
Clone this wiki locally
Getting Started
Join the Free Code Camp Community
- Learn how Free Code Camp Works
- Create a GitHub Account and Join our Chat Rooms
- Configure your Code Portfolio
- Join a Campsite in Your City
- Learn What to Do If You Get Stuck
Front End Development Certification
HTML5 and CSS
- Challenge: Say Hello to HTML Elements
- Challenge: Headline with the h2 Element
- Challenge: Inform with the Paragraph Element
- Challenge: Make Unique Objects by Passing Parameters to our Constructor
- Challenge: Uncomment HTML
- Challenge: Comment out HTML
- Challenge: Fill in the Blank with Placeholder Text
- Challenge: Delete HTML Elements
- Challenge: Change the Color of Text
- Challenge: Use CSS Selectors to Style Elements
- Challenge: Use a CSS Class to Style an Element
- Challenge: Style Multiple Elements with a CSS Class
- Challenge: Change the Font Size of an Element
- Challenge: Set the Font Family of an Element
- Challenge: Import a Google Font
- Challenge: Specify How Fonts Should Degrade
- Challenge: Add Images to your Website
- Challenge: Size your Images
- Challenge: Add Borders Around your Elements
- Challenge: Add Rounded Corners with a Border Radius
- Challenge: Make Circular Images with a Border Radius
- Challenge: Link to External Pages with Anchor Elements
- Challenge: Nest an Anchor Element within a Paragraph)
- Challenge: Make Dead Links using the Hash Symbol
- Challenge: Turn an Image into a Link
- Challenge: Add Alt Text to an Image for Accessibility
- Challenge: Create a Bulleted Unordered List
- Challenge: Create an Ordered List
- Challenge: Create a Text Field
- Challenge: Add Placeholder Text to a Text Field
- Challenge: Create a Form Element
- Challenge: Add a Submit Button to a Form
- Challenge: Use HTML5 to Require a Field
- Challenge: Create a Set of Radio Buttons
- Challenge: Create a Set of Checkboxes
- Challenge: Check Radio Buttons and Checkboxes by Default
- Challenge: Nest Many Elements within a Single Div Element
- Challenge: Give a Background Color to a Div Element
- Challenge: Set the ID of an Element
- Challenge: Use an ID Attribute to Style an Element
- Challenge: Adjusting the Padding of an Element
- Challenge: Adjust the Margin of an Element
- Challenge: Add a Negative Margin to an Element
- Challenge: Add Different Padding to Each Side of an Element
- Challenge: Add Different Margins to Each Side of an Element
- Challenge: Use Clockwise Notation to Specify the Padding of an Element
- Challenge: Use Clockwise Notation to Specify the Margin of an Element
- Challenge: Style the HTML Body Element
- Challenge: Inherit Styles from the Body Element Complete
- Challenge: Prioritize One Style Over Another Complete
- Challenge: Override Styles in Subsequent CSS Complete
- Challenge: Override Class Declarations by Styling ID Attributes Complete
- Challenge: Override Class Declarations with Inline Styles Complete
- Challenge: Override All Other Styles by using Important Complete
- Challenge: Use Hex Code for Specific Colors Complete
- Challenge: Use Hex Code to Color Elements White Complete
- Challenge: Use Hex Code to Color Elements Red Complete
- Challenge: Use Hex Code to Color Elements Green Complete
- Challenge: Use Hex Code to Color Elements Blue
- Challenge: Use Hex Code to Mix Colors
- Challenge: Use Hex Code to Color Elements Gray
- Challenge: Use Hex Code for Specific Shades of Gray
- Challenge: Use Abbreviated Hex Code
- Challenge: Use RGB values to Color Elements
- Challenge: Use RGB to Color Elements White
- Challenge: Use RGB to Color Elements Red
- Challenge: Use RGB to Color Elements Green
- Challenge: Use RGB to Color Elements Blue
- Challenge: Use RGB to Mix Colors
- Challenge: Use RGB to Color Elements Gray
Responsive Design with Bootstrap
- Challenge: Use Responsive Design with Bootstrap Fluid Containers
- Challenge: Make Images Mobile Responsive
- Challenge: Center Text with Bootstrap
- Challenge: Create a Bootstrap Button
- Challenge: Create a Block Element Bootstrap Button
- Challenge: Taste the Bootstrap Button Color Rainbow
- Challenge: Call out Optional Actions with Button Info
- Challenge: Warn your Users of a Dangerous Action
- Challenge: Use the Bootstrap Grid to Put Elements Side By Side
- Challenge: Ditch Custom CSS for Bootstrap
- Challenge: Use Spans for Inline Elements
- Challenge: Create a Custom Heading
- Challenge: Add Font Awesome Icons to our Buttons
- Challenge: Add Font Awesome Icons to all of our Buttons
- Challenge: Responsively Style Radio Buttons
- Challenge: Responsively Style Checkboxes
- Challenge: Style Text Inputs as Form Controls
- Challenge: Line up Form Elements Responsively with Bootstrap
- Challenge: Create a Bootstrap Headline
- Challenge: House our page within a Bootstrap Container Fluid Div
- Challenge: Create a Bootstrap Row
- Challenge: Split your Bootstrap Row
- Challenge: Create Bootstrap Wells
- Challenge: Add Elements within your Bootstrap Wells
- Challenge: Apply the Default Bootstrap Button Style
- Challenge: Create a Class to Target with jQuery Selectors
- Challenge: Add ID Attributes to Bootstrap Elements
- Challenge: Label Bootstrap Wells
- Challenge: Give Each Element a Unique ID
- Challenge: Label Bootstrap Buttons
- Challenge: Use Comments to Clarify Code
Gear up for Success
- Join our LinkedIn Alumni Network
- Join our Subreddit
- Read Coding News on our Medium Publication
- Watch us Code Live on Twitch.tv
- Challenge: Commit to a Goal and a Nonprofit
jQuery
- Challenge: Learn how Script Tags and Document Ready Work
- Challenge: Target HTML Elements with Selectors Using jQuery
- Challenge: Target Elements by Class Using jQuery
- Challenge: Target Elements by ID Using jQuery
- Challenge: Delete your jQuery Functions
- Challenge: Target the same element with multiple jQuery Selectors
- Challenge: Remove Classes from an element with jQuery
- Challenge: Change the CSS of an Element Using jQuery
- Challenge: Disable an Element Using jQuery
- Challenge: Change Text Inside an Element Using jQuery
- Challenge: Remove an Element Using jQuery
- Challenge: Use appendTo to Move Elements with jQuery
- Challenge: Clone an Element Using jQuery
- Challenge: Target the Parent of an Element Using jQuery
- Challenge: Target the Children of an Element Using jQuery
- Challenge: Target a Specific Child of an Element Using jQuery
- Challenge: Target Even Numbered Elements Using jQuery
- Challenge: Use jQuery to Modify the Entire Page
Basic Front End Development Projects
- Get Set for our Front End Development Projects
- Build a Tribute Page
- Build a Personal Portfolio Webpage
Basic JavaScript
- Challenge: Comment your JavaScript Code
- Challenge: Understand Boolean Values
- Challenge: Declare JavaScript Variables
- Challenge: Storing Values with the Equal Operator
- Challenge: Initializing Variables with the Equal Operator
- Challenge: Understanding Uninitialized Variables
- Challenge: Understanding Case Sensitivity in Variables
- Challenge: Add Two Numbers with JavaScript
- Challenge: Subtract One Number from Another with JavaScript
- Challenge: Multiply Two Numbers with JavaScript
- Challenge: Divide One Number by Another with JavaScript
- Challenge: Increment a Number with Javascript
- Challenge: Decrement a Number with Javascript
- Challenge: Create Decimal Numbers with JavaScript
- Challenge: Multiply Two Decimals with JavaScript
- Challenge: Divide one Decimal by Another with JavaScript
- Challenge: Finding a Remainder in Javascript
- Challenge: Assignment with Plus Equals
- Challenge: Assignment with Minus Equals
- Challenge: Assignment with Times Equals
- Challenge: Assignment with Divided by Equals
- Checkpoint: Convert Celsius to Fahrenheit
- Challenge: Declare String Variables
- Challenge: Escaping Literal Quotes in Strings
- Challenge: Quoting Strings with Single Quotes
- Challenge: Escape Sequences in Strings
- Challenge: Concatenating Strings with Plus Operator
- Challenge: Concatenating Strings with the Plus Equals Operator
- Challenge: Constructing Strings with Variables
- Challenge: Appending Variables to Strings
- Challenge: Find the Length of a String
- Challenge: Use Bracket Notation to Find the First Character in a String
- Challenge: Understand String Immutability
- Challenge: Use Bracket Notation to Find the Nth Character in a String
- Challenge: Use Bracket Notation to Find the Last Character in a String
- Challenge: Use Bracket Notation to Find the Nth-to-Last Character in a String
- Checkpoint: Word Blanks
- Challenge: Store Multiple Values in one Variable using JavaScript Arrays
- Challenge: Nest one Array within Another Array
- Challenge: Access Array Data with Indexes
- Challenge: Modify Array Data With Indexes
- Challenge: Access Multi-Dimensional Arrays With Indexes
- Challenge: Manipulate Arrays With pop()
- Challenge: Manipulate Arrays With push()
- Challenge: Manipulate Arrays With shift()
- Challenge: Manipulate Arrays With unshift()
- Checkpoint: Shopping List
- Challenge: Write Reusable JavaScript with Functions
- Challenge: Passing Values to Functions with Arguments
- Challenge: Global Scope and Functions
- Challenge: Local Scope and Functions
- Challenge: Global vs. Local Scope in Functions
- Challenge: Return a Value from a Function with Return
- Challenge: Assignment with a Returned Value
- Checkpoint: Stand in Line
- Challenge: Use Conditional Logic with If-Else Statements
- Challenge: Comparison with the Equality Operator
- Challenge: Comparison with the Strict Equality Operator
- Challenge: Comparison with the Inequality Operator
- Challenge: Comparison with the Strict Inequality Operator
- Challenge: Comparison with the Greater Than Operator
- Challenge: Comparison with the Greater Than Equal To Operator
- Challenge: Comparison with the Less Than Operator
- Challenge: Comparison with the Less Than Equal To Operator
- Challenge: Comparisons with the Logical And Operator
- Challenge: Comparisons with the Logical Or Operator
- Challenge: Introducing Else Statements
- Challenge: Introducing Else If Statements
- Challenge: Logical Order in If Else Statements
- Challenge: Chaining If Else Statements
- Checkpoint: Golf Code
- Challenge: Selecting from many options with Switch Statements
- Challenge: Adding a default option in Switch statements
- Challenge: Multiple Identical Options in Switch Statements
- Challenge: Replacing If Else Chains with Switch
- Challenge: Returning Boolean Values from Functions
- Challenge: Return Early Pattern for Functions
- Checkpoint: Counting Cards
- Challenge: Build JavaScript Objects
- Challenge: Accessing Objects Properties with the Dot Operator
- Challenge: Accessing Objects Properties with Bracket Notation
- Challenge: Accessing Objects Properties with Variables
- Challenge: Updating Object Properties
- Challenge: Add New Properties to a JavaScript Object
- Challenge: Delete Properties from a JavaScript Object
- Challenge: Using Objects for Lookups
- Challenge: Testing Objects for Properties
- Challenge: Introducing JavaScript Object Notation (JSON)
- Challenge: Accessing Nested Objects in JSON
- Challenge: Accessing Nested Arrays in JSON
- Checkpoint: Record Collection
- Challenge: Iterate with JavaScript For Loops
- Challenge: Iterate Odd Numbers With a For Loop
- Challenge: Count Backwards With a For Loop
- Challenge: Iterate Through an Array with a For Loop
- Challenge: Nesting For Loops
- Challenge: Iterate with JavaScript While Loops
- Checkpoint: Profile Lookup
- Challenge: Generate Random Fractions with JavaScript
- Challenge: Generate Random Whole Numbers with JavaScript
- Challenge: Generate Random Whole Numbers within a Range
- Challenge: Sift through Text with Regular Expressions
- Challenge: Find Numbers with Regular Expressions
- Challenge: Find White Space with Regular Expressions
- Challenge: Invert Regular Expression Matches with JavaScript
Object Oriented and Functional Programming
- Challenge: Declare JavaScript Objects as Variables
- Challenge: Construct JavaScript Objects with Functions
- Challenge: Make Object Properties Private
- Challenge: Make Instances of Objects with a Constructor Function
- Challenge: Iterate over Arrays with .map
- Challenge: Condense arrays with .reduce
- Challenge: Filter Arrays with .filter
- Challenge: Sort Arrays with .sort
- Challenge: Reverse Arrays with .reverse
- Challenge: Concatenate Strings with .concat
- Challenge: Split Strings with .split
- Challenge: Join Strings with .join
Basic Algorithm Scripting
- Algorithm: Get Set for our Algorithm Challenges
- Algorithm: Reverse a String
- Algorithm: Factorialize a Number
- Algorithm: Check for Palindromes
- Algorithm: Find the Longest Word in a String
- Algorithm: Title Case a Sentence
- Algorithm: Return Largest Numbers in Arrays
- Algorithm: Confirm the Ending
- Algorithm: Repeat a string repeat a string
- Algorithm: Truncate a string
- Algorithm: Chunky Monkey
- Algorithm: Slasher Flick
- Algorithm: Mutations
- Algorithm: Falsy Bouncer
- Algorithm: Seek and Destroy
- Algorithm: Where do I belong
- Algorithm: Caesar's Cipher
JSON APIs and Ajax
- Challenge: Trigger Click Events with jQuery
- Challenge: Change Text with Click Events
- Challenge: Get JSON with the jQuery getJSON Method
- Challenge: Convert JSON Data to HTML
- Challenge: Render Images from Data Sources
- Challenge: Prefilter JSON
- Challenge: Get Geo-location Data
Intermediate Front End Development Projects
- Build a Random Quote Machine
- Show the Local Weather
- Build a Wikipedia Viewer
- Use the Twitch.tv JSON API
Intermediate Algorithm Scripting
- Algorithm: Sum All Numbers in a Range
- Algorithm: Diff Two Arrays
- Algorithm: Roman Numeral Converter
- Algorithm: Where art thou
- Algorithm: Search and Replace
- Algorithm: Pig Latin
- Algorithm: DNA Pairing
- Algorithm: Missing letters
- Algorithm: Boo who
- Algorithm: Sorted Union
- Algorithm: Convert HTML Entities
- Algorithm: Spinal Tap Case
- Algorithm: Sum All Odd Fibonacci Numbers
- Algorithm: Sum All Primes
- Algorithm: Smallest Common Multiple
- Algorithm: Finders Keepers
- Algorithm: Drop it
- Algorithm: Steamroller
- Algorithm: Binary Agents
- Algorithm: Everything Be True
- Algorithm: Arguments Optional
Advanced Algorithm Scripting
- Algorithm: Validate US Telephone Numbers
- Algorithm: Symmetric Difference
- Algorithm: Exact Change
- Algorithm: Inventory Update
- Algorithm: No repeats please
- Algorithm: Friendly Date Ranges
- Algorithm: Make a Person
- Algorithm: Map the Debris
- Algorithm: Pairwise
Advanced Front End Development Projects
- Build a JavaScript Calculator
- Build a Pomodoro Clock
- Build a Tic Tac Toe Game
- Build a Simon Game
Claim Your Front End Development Certificate
Data Visualization Certification
Sass
- Learn Sass Challenges Incomplete
React
- Learn React Challenges
React Projects
- Build a Markdown Previewer
- Build a Camper Leaderboard
- Build a Recipe Box
- Build the Game of Life
- Build a Rouguelike Dungeon Crawler Game
D3
- Learn D3 Challenges
Data Visualization Projects
- Visualize Data with a Bar Chart
- Visualize Data with a Scatterplot Graph
- Visualize Data with a Heat Map
- Show Relationships with a Force Directed Graph
- Map Data Across the Globe
Claim Your Data Visualization Certificate
- Claim Your Data Visualization Certificate
Back End Development Certification
Automated Testing and Debugging
Git
Node.js and Express.js
- Challenge: Manage Packages with NPM
- Challenge: Start a Node.js Server
- Challenge: Continue working with Node.js Servers
- Challenge: Finish working with Node.js Servers
- Challenge: Build Web Apps with Express.js
MongoDB
- Challenge: Store Data in MongoDB
API Projects
- Get Set for our Back End Development Projects
- Timestamp Microservice
- Request Header Parser Microservice
- URL Shortener Microservice
- Image Search Abstraction Layer
- File Metadata Microservice
Dynamic Web Applications Projects
- Build a Voting App
- Build a Nightlife Coordination App
- Chart the Stock Market
- Manage a Book Trading Club
- Build a Pinterest Clone
Claim Your Back End Development Certificate
- Claim Your Back End Development Certificate
Video Challenges
Computer Basics
- Computer Basics: The 4 Basic Parts of a Computer
- Computer Basics: More Computer Hardware
- Computer Basics: Chips and Moore's Law
- Computer Basics: Intro to Binary Code
- Computer Basics: Decoding a Binary Number
- Computer Basics: How To Measure Data Size
- Computer Basics: Measuring Data Speed
- Computer Basics: Binary Bytes
- Computer Basics: Types of Computers
- Computer Basics: More on the Motherboard
- Computer Basics: Data Networks
- Computer Basics: IP Addresses
- Computer Basics: How the Internet Works
- Computer Basics: Software
- Computer Basics: Content Delivery Networks
- Analog vs Digital and File Compression
- Routers and Packets
- Source Code
- Variables In Code
- What Do Programmers Do?
- Console and Logging
- Computer Security
The DOM
- The DOM: What's the Document Object Model?
- The DOM: Style in the Header, Script in the Footer
JavaScript Lingo
- JavaScript Lingo: MDN and Documentation
- JavaScript Lingo: Value Types
- JavaScript Lingo: Variables & camelCase
- JavaScript Lingo: Arrays & Objects
- JavaScript Lingo: Finding and Indexing Data in Arrays
- JavaScript Lingo: Manipulating Data
- JavaScript Lingo: Math
- JavaScript Lingo: Loops JavaScript Lingo: Regular Expressions
Chrome Developer Tools
- Chrome Dev Tools: Elements
- Chrome Dev Tools: Network
- Chrome Dev Tools: Sources
- Chrome Dev Tools: Timeline
- Chrome Dev Tools: Profiles
- Chrome Dev Tools: Resources
- Chrome Dev Tools: Audits
- Chrome Dev Tools: Console
- Chrome Dev Tools: Summary
Big O Notation
- Big O Notation: What It Is and Why You Should Care
- Big O Notation: A Few Examples
Full Stack Development Certification
Nonprofit Projects
- Greenfield Nonprofit Project #1
- Greenfield Nonprofit Project #2
- Legacy Code Nonprofit Project #1
- Legacy Code Nonprofit Project #2
- Claim your Full Stack Development Certification
Coding Interview Preparation
Coding Interview Training
- Soft Skill Training
- Critical Thinking Training
- Whiteboard Coding Training
Mock Interviews
- Mock Interview #1
- Mock Interview #2
- Mock Interview #3
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