Abel Castillo

Abel Castillo

Member Since January 2, 2016
Open to Work

19,094

Total Points

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Skills & Experience

  • Spoken Languages

    • English
    • Spanish

194 Achievements

  • PHP Internal Functions
  • PHP Returns & Closures
  • PHP Functions Basics
  • PHP Loops
  • PHP Arrays
  • PHP Conditionals
  • PHP on the Web
  • Daily Exercise Program
  • Unit Converter
  • Getting to Know PHP
  • Arrow Functions
  • Pass Information Into Functions
  • Create Reusable Code with Functions
  • The Math Object
  • Working with Numbers
  • Making Decisions in Your Code with Conditional Statements
  • Working With Strings
  • Storing and Tracking Information with Variables
  • Hello, JavaScript!
  • Getting Started with CSS Transforms
  • Transition Timing Functions and Delays
  • Getting Started with CSS Transitions
  • 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
  • GitHub and Other Remote Repositories
  • Managing Committed Files
  • First Commits
  • Exploring Async/Await
  • Understanding Promises
  • Asynchronous JavaScript with Callbacks
  • What is Asynchronous Programming?
  • AJAX and APIs
  • jQuery and AJAX
  • GET and POST Requests in a Browser
  • 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
  • Checking Out and Returning a Book
  • Starting with Some Methods
  • The Rough Plan
  • Practicing Getters and Setters
  • Practicing Classes
  • Practicing Object Basics
  • Reformatting User Input
  • Validating a Form with Regular Expressions
  • Regular Expressions
  • Working with jQuery Collections (2017)
  • Understanding jQuery Events and DOM Traversal (2017)
  • Introducing jQuery (2017)
  • JavaScript Tools and Workflows
  • JavaScript is Everywhere
  • The Role of Selectors in JavaScript
  • Pseudo-classes and Combinators
  • Selector Basics
  • Using Slack Effectively
  • Introducing Slack for the Techdegree
  • Getters and Setters
  • Working with Classes in JavaScript
  • Object Basics
  • Introduction to Object-Oriented JavaScript
  • Programming AJAX
  • AJAX Concepts
  • Building Forms With Bootstrap
  • Using Bootstrap Components
  • Responsive Layouts With the Bootstrap Grid
  • Getting to Know Bootstrap 4
  • Going Further with Grid Layout
  • Flexible Sized Grids
  • Introducing Grid Layout
  • 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
  • Create Function Using Arrow Syntax
  • Using Template Literals
  • Defining Variables With let and const
  • Finishing the Game
  • Introducing JavaScript
  • Captioning Video
  • Media Basics
  • Welcome to the Treehouse Club
  • 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
  • Why Version Control Matters
  • Workspace Basics
  • Web Apps
  • Websites
  • Introduction
  • Quiz Practice Project
  • Prototypal Inheritance
  • Constructor Functions & Prototypes
  • Introduction to Methods
  • Custom Media Players
  • Captioning Video
  • Media Basics
  • Traversing and Manipulating the DOM with JavaScript
  • Selecting Elements and Adding Events with JavaScript
  • JavaScript and the DOM
  • Keyframe and Line Drawing Animations
  • Transitions and Transforms
  • Creating an SVG
  • Introduction to SVG
  • Advanced Sass Concepts
  • Speeding up Workflow With Sass
  • Variables, Mixins, and Extending Selectors
  • Getting Started with Sass
  • Debugging, Best Practices, and Production
  • Refactoring with Sass
  • Installing Sass and Setting up the Project
  • Using a jQuery Carousel
  • Add a Sticky Navigation Bar
  • Introducing jQuery Plugins
  • Creating a Simple Drawing Application
  • Creating a Password Confirmation Form
  • Creating a Mobile Drop Down Menu
  • Structuring Tables
  • Table Basics
  • Art Direction with the Picture Element
  • Image Delivery with Srcset and Sizes
  • Creating a Simple Lightbox
  • Creating a Spoiler Revealer
  • Introduction to jQuery
  • Advanced Selectors
  • Going Further with Attribute Selectors and Pseudo-Classes
  • Selectors - Beyond the Basics
  • Building a Layout with Flexbox
  • Flexbox Properties
  • JavaScript Objects
  • JavaScript Arrays
  • JavaScript Loops
  • Choosing Options
  • Organizing Forms
  • Form Basics
  • Understanding Flexbox
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Positioning Page Content
  • CSS Layout Project
  • Page Layout with the Float Property
  • Controlling Layout with CSS Display Modes
  • Getting Started with CSS Layout
  • JavaScript Functions
  • JavaScript Conditional Statements
  • JavaScript Numbers
  • JavaScript Variables
  • Introducing JavaScript
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Understanding Values and Units
  • Basic Selectors
  • Getting Started with CSS
  • Debugging HTML and CSS Problems
  • Sharing a Website
  • Responsive Web Design and Testing
  • Adding Pages to a Website
  • Styling Web Pages and Navigation
  • Customizing Colors and Fonts
  • CSS: Cascading Style Sheets
  • Creating HTML Content
  • HTML First
  • Beginning HTML and CSS
  • Newbie