youngjin ha
seal-mask

youngjin ha

Techdegree Graduate

Member Since October 2, 2018

22,644

Total Points

Points are earned whenever you take an important action on Treehouse.
Learn more about when and how points are earned.

205 Achievements

  • Python: Inheritance
  • Python: Instant Objects
  • Packing and Unpacking
  • Getting to Know Tuples
  • All Together Now
  • Functions and Looping
  • Types and Branching
  • Meet Python
  • Going Further with Grid Layout
  • Flexible Sized Grids
  • Introducing Grid Layout
  • Time Complexity
  • Playing a Counting Game
  • Get Involved in Open Source
  •  Create a Web Presence on GitHub
  •  Working on a Team
  • React Router and Authentication
  • Implementing Basic Authentication
  • Introducing the Authentication Project
  • What is Agile?
  • Refactoring and Modularizing a REST API
  • Create, Read, Update, Delete
  • Managing Data and Asynchronous Code
  • Getting to Know REST APIs
  • Asynchronous Code in Express
  • Getting the REST You Need 2
  • Date and Time Functions
  • Aggregate and Numeric Functions
  • Working with Text
  • Ordering, Limiting and Paging Results
  • Handling Errors When Manipulating Data
  • Deleting Data from a Database
  • Updating Data in a Database
  • Adding Data to a Database
  • Finding the Data You Want
  • Getting Data from a Database
  • Data, Databases and SQL
  • JavaScript Frameworks, Libraries, and Developer Roles
  • JavaScript Outside of the Browser
  • Exploring Async/Await
  • Understanding Promises
  • Asynchronous JavaScript with Callbacks
  • What is Asynchronous Programming?
  • Programming AJAX
  • AJAX Concepts
  • Introduction to HTTP
  • Common Commands
  • Directories and Files
  • The Command Shell
  • Combining Array Methods
  • Array Manipulation
  • Array Iteration
  • Callbacks and the DOM
  • Callbacks with Timers
  • Introduction to Callback Functions
  • Practicing Getters and Setters
  • Practicing Classes
  • Practicing Object Basics
  • Reformatting User Input
  • Validating a Form with Regular Expressions
  • Regular Expressions
  • Choosing Options
  • The Role of Selectors in JavaScript
  • Pseudo-classes and Combinators
  • Selector Basics
  • Improving the Application Code
  • Editing and Filtering Names
  • Adding and Removing Names
  • Using Slack Effectively
  • Introducing Slack for the Techdegree
  • Actions, Dispatch and Reducers. Oh my!
  • Modularizing the React Scoreboard Application
  • Getting Started with Redux
  • Working By Yourself
  • Hello, GitHub!
  • Going Further with Routing
  • Navigating, Nesting and Redirecting Routes
  • Getting Started with React Router
  • React Component Patterns
  • Stateful Components and Lifecycle Methods
  • Managing State and Data Flow
  • Build Modular Interfaces with Components
  • Stateful Components
  • Introducing Props
  • Thinking in Components
  • First Steps in React
  • Getting to Know Bootstrap 4
  • GitHub and Other Remote Repositories
  • Managing Committed Files
  • Organizing Forms
  • Form Basics
  • Building a Layout with Flexbox
  • Flexbox Properties
  • Understanding Flexbox
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Positioning Page Content
  • CSS Layout Project
  • Page Layout with the Float Property
  • Getting Started With HTML
  • Controlling Layout with CSS Display Modes
  • Getting Started with CSS Layout
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Understanding Values and Units
  • Basic Selectors
  • Getting Started with CSS
  • Going Further with HTML
  • Images, Text and Links
  • Structuring Your Content
  • Adding a New Web Page
  • Make It Beautiful with CSS
  • MASH JavaScript
  • MASH CSS
  • MASH HTML
  • Treehouse Club - JavaScript
  • Treehouse Club - CSS
  • Welcome to the Treehouse Club
  • WWW
  • The Internet
  • Computer Languages
  • Computer Basics
  • Next Steps
  • Improving Our Tests
  • Behavior Driven Development with Mocha & Chai
  • Introducing Unit Testing
  • Completing and Testing the API
  • Communicating with Mongo Through Mongoose
  • Modeling Data for the API
  • Building API Routes in Express
  • Building a REST Service
  • Express Middleware
  • Sessions and Cookies
  • User Registration and Login
  • What is Authentication?
  • Go Further With Mongo
  • Working With Collections
  • Understanding MongoDB
  • Moving Around in the Console
  • Getting Started with MongoDB
  • Serving Static Files in Express
  • Applying Express Knowledge
  • Middleware
  • Deeper into Routing with Express
  • Using Templates with Express
  • Getting Started with Express
  • Improving your Gulp Workflow
  • Compile Sass with Gulp
  • Gulp your JavaScript workflow!
  • Welcome to Gulp.js
  • First Commits
  • Updating and Uninstalling Packages with npm
  • Installing Packages with npm
  • What is npm?
  • HTTP Methods and Headers
  • Creating a Basic Template Engine in Node.js
  • Handling Routes in Node.js
  • Creating a Simple Server in Node.js
  • Creating a Command Line Weather Application
  • Handling Errors in Node
  • Getting Data From an API With Node
  • Introduction to Node.js
  • GET and POST Requests in a Browser
  • Adding the Game Logic
  • Making the Game Interactive
  • Rendering the Game
  •  Building Constructor Methods and Generating Objects
  • Introducing 'Four in a Row'
  • Getters and Setters
  • Working with Classes in JavaScript
  • Object Basics
  • Introduction to Object-Oriented JavaScript
  • AJAX and APIs
  • jQuery and AJAX
  • Programming AJAX
  • AJAX Concepts
  • Working with jQuery Collections (2017)
  • Understanding jQuery Events and DOM Traversal (2017)
  • Introducing jQuery (2017)
  • Traversing the DOM
  • Responding to User Interaction
  • Making Changes to the DOM
  • Getting a Handle on the DOM
  • HTML: The Structural Foundation of Web Pages and Applications
  • Getting Familiar with HTML and CSS
  • The Browser Environment
  • Create Function Using Arrow Syntax
  • Using Template Literals
  • Defining Variables With let and const
  • JavaScript Tools and Workflows
  • JavaScript is Everywhere
  • JavaScript Arrays
  • JavaScript Objects
  • JavaScript Loops
  • JavaScript Functions
  • JavaScript Conditional Statements
  • JavaScript Numbers
  • JavaScript Variables
  • Introducing JavaScript
  • Finishing the Game
  • Introducing JavaScript
  • Newbie