Bert Witzel
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Bert Witzel

Techdegree Graduate

Member Since April 20, 2020

24,502

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196 Achievements

  • Working By Yourself
  • Hello, GitHub!
  • Validating Data
  • The Importance of Data Validation
  • Retrieve Related Data in Sequelize Queries
  • Create Related Data Using Sequelize Models
  • Data Relationships in Sequelize
  • Understand Data Relationships
  • Refactoring and Modularizing a REST API
  • Create, Read, Update, Delete
  • Managing Data and Asynchronous Code
  • Getting to Know REST APIs
  • Getting the REST You Need 2
  • Performing CRUD Operations
  • Defining Models
  • Getting Started with Sequelize
  • Asynchronous Code in Express
  • 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
  • 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
  • Building Your Resume
  • Stateful Components
  • Introducing Props
  • Thinking in Components
  • First Steps in React
  • Serving Static Files in Express
  • Applying Express Knowledge
  • Middleware
  • Deeper into Routing with Express
  • Using Templates with Express
  • Getting Started with Express
  • Updating and Uninstalling Packages with npm
  • Installing Packages with npm
  • What is npm?
  • Creating a Command Line Weather Application
  • Handling Errors in Node
  • Getting Data From an API With Node
  • Introduction to Node.js
  • JavaScript Frameworks, Libraries, and Developer Roles
  • JavaScript Outside of the Browser
  • Working with jQuery Collections (2017)
  • Understanding jQuery Events and DOM Traversal (2017)
  • Introducing jQuery (2017)
  • GET and POST Requests in a Browser
  • Introduction to HTTP
  • Reformatting User Input
  • Validating a Form with Regular Expressions
  • Regular Expressions
  • Build an Accessible Form
  • Introduction To Accessibility
  • The Role of Selectors in JavaScript
  • Pseudo-classes and Combinators
  • Selector Basics
  • Building Forms With Bootstrap
  • Using Bootstrap Components
  • Responsive Layouts With the Bootstrap Grid
  • Getting to Know Bootstrap 4
  • Practice forEach
  • Combining Array Methods
  • Array Manipulation
  • Array Iteration
  • Exploring Async/Await
  • Understanding Promises
  • Asynchronous JavaScript with Callbacks
  • What is Asynchronous Programming?
  • Programming AJAX
  • AJAX Concepts
  • Callbacks and the DOM
  • Callbacks with Timers
  • Introduction to Callback Functions
  • Adding the Game Logic
  • Making the Game Interactive
  • Rendering the Game
  •  Building Constructor Methods and Generating Objects
  • Introducing 'Four in a Row'
  • Checking Out and Returning a Book
  • Starting with Some Methods
  • The Rough Plan
  • Getters and Setters
  • Practicing Classes
  • Working with Classes in JavaScript
  • Practicing Object Basics
  • Object Basics
  • Introduction to Object-Oriented JavaScript
  • 100th Techdegree Peer Review
  • Keyframe and Line Drawing Animations
  • Transitions and Transforms
  • Creating an SVG
  • Introduction to SVG
  • Improving the Application Code
  • Editing and Filtering Names
  • Adding and Removing Names
  • Traversing the DOM
  • Responding to User Interaction
  • Making Changes to the DOM
  • Getting a Handle on the DOM
  • The Browser Environment
  • Loop Through Objects
  • Object Basics
  • 50th Techdegree Peer Review
  • Multidimensional Arrays
  • Loop Through Arrays
  • Store Multiple Values in an Array
  • Working with 'for' Loops
  • Simplify Repetitive Tasks with Loops
  • 25th Techdegree Peer Review
  • Arrow Functions
  • Pass Information Into Functions
  • Create Reusable Code with Functions
  • The Math Object
  • Working with Numbers
  • Finishing the Game
  • Introducing JavaScript
  • JavaScript Tools and Workflows
  • JavaScript is Everywhere
  • Going Further with Grid Layout
  • 10th Techdegree Peer Review
  • Flexible Sized Grids
  • Introducing Grid Layout
  • 5th Techdegree Peer Review
  • Add Reusable Logic to Your Sass
  • 5 Star Techdegree Reviewer
  • Write Smart and Efficient CSS with Sass
  • Improve Your Workflow with Sass
  • 1st Techdegree Peer Review
  • Getting Started with Sass
  • Adding 3D Effects with CSS
  • Getting Started with CSS Transforms
  • Transition Timing Functions and Delays
  • Getting Started with CSS Transitions
  • GitHub and Other Remote Repositories
  • Managing Committed Files
  • First Commits
  • Treehouse Festival
  • Common Commands
  • Directories and Files
  • The Command Shell
  • Building a Layout with Flexbox
  • Flexbox Properties
  • Understanding Flexbox
  • Advanced Selectors
  • Going Further with Attribute Selectors and Pseudo-Classes
  • Selectors - Beyond the Basics
  • Choosing Options
  • Organizing Forms
  • Form Basics
  • Structuring Tables
  • Table Basics
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Making Decisions in Your Code with Conditional Statements
  • Working With Strings
  • Storing and Tracking Information with Variables
  • Hello, JavaScript!
  • How to Make Wireframes in Adobe XD
  • How to Make Wireframes in Sketch
  • How to Make Wireframes in Balsamiq
  • How to Make Wireframes on Paper
  • What is Wireframing?
  • Positioning Page Content
  • CSS Layout Project
  • Page Layout with the Float Property
  • 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
  • Getting Started With HTML
  • Adding a New Web Page
  • Make It Beautiful with CSS
  • HTML: The Structural Foundation of Web Pages and Applications
  • Getting Familiar with HTML and CSS
  • WWW
  • The Internet
  • Computer Languages
  • Computer Basics
  • Newbie