🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

🤖 Level up your chatbot knowledge with our latest AI course.

Join our free community Discord server here!

Learn React with us!

yujia liu

Member Since May 8, 2015

14,964

Total Points

•
4,810

JavaScript

4810 pts
Achievements

0 pts
Forum
•
2,153

C#

2153 pts
Achievements

0 pts
Forum
•
1,785

CSS

1785 pts
Achievements

0 pts
Forum
•
1,170

HTML

1170 pts
Achievements

0 pts
Forum
•
1,023

Development Tools

1023 pts
Achievements

0 pts
Forum
•
845

Databases

845 pts
Achievements

0 pts
Forum
•
814

Java

814 pts
Achievements

0 pts
Forum
•
682

Python

682 pts
Achievements

0 pts
Forum
•
223

Design

223 pts
Achievements

0 pts
Forum
•
207

Quality Assurance

207 pts
Achievements

0 pts
Forum
•
199

Digital Literacy

199 pts
Achievements

0 pts
Forum
•
154

PHP

154 pts
Achievements

0 pts
Forum
•
3

Machine Learning

3 pts
Achievements

0 pts
Forum

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

179 Achievements

Achievement
Creating an SVG

SVG Basics

Achieved
Jul 5, 2018
Achievement
Introduction to SVG

SVG Basics

Achieved
Jul 5, 2018
Achievement
Art Direction with the Picture Element

Responsive Images

Achieved
Jul 4, 2018
Achievement
Image Delivery with Srcset and Sizes

Responsive Images

Achieved
Jul 4, 2018
Achievement
Building Forms With Bootstrap

Bootstrap Basics

Achieved
Jul 3, 2018
Achievement
Using Bootstrap Components

Bootstrap Basics

Achieved
Jul 2, 2018
Achievement
Responsive Layouts With the Bootstrap Grid

Bootstrap Basics

Achieved
Jun 29, 2018
Achievement
Getting to Know Bootstrap 4

Bootstrap Basics

Achieved
Jun 28, 2018
Achievement
Angular Form Validation

Angular Basics

Achieved
Jun 27, 2018
Achievement
Angular Basic Forms

Angular Basics

Achieved
May 31, 2018
Achievement
Services in Angular

Angular Basics

Achieved
May 30, 2018
Achievement
Angular Components

Angular Basics

Achieved
May 30, 2018
Achievement
Setting Up an Angular Application

Angular Basics

Achieved
May 29, 2018
Achievement
Improving your Gulp Workflow

Gulp Basics

Achieved
Jan 5, 2018
Achievement
Compile Sass with Gulp

Gulp Basics

Achieved
Jan 3, 2018
Achievement
Gulp your JavaScript workflow!

Gulp Basics

Achieved
Jan 2, 2018
Achievement
Welcome to Gulp.js

Gulp Basics

Achieved
Jan 2, 2018
Achievement
Add Reusable Logic to Your Sass

Sass Basics

Achieved
Jan 2, 2018
Achievement
Write Smart and Efficient CSS with Sass

Sass Basics

Achieved
Jan 2, 2018
Achievement
Improve Your Workflow with Sass

Sass Basics

Achieved
Jan 2, 2018
Achievement
Getting Started with Sass

Sass Basics

Achieved
Jan 2, 2018
Achievement
HTTP Methods and Headers

Build a Simple Dynamic Site with Node.js

Achieved
Sep 23, 2017
Achievement
Creating a Basic Template Engine in Node.js

Build a Simple Dynamic Site with Node.js

Achieved
Sep 23, 2017
Achievement
Handling Routes in Node.js

Build a Simple Dynamic Site with Node.js

Achieved
Sep 22, 2017
Achievement
Creating a Simple Server in Node.js

Build a Simple Dynamic Site with Node.js

Achieved
Sep 22, 2017
Achievement
Exploring Best Practices

Introduction to Selenium

Achieved
Sep 21, 2017
Achievement
Test Drive

Introduction to Selenium

Achieved
Sep 20, 2017
Achievement
Meet Selenium

Introduction to Selenium

Achieved
Sep 20, 2017
Achievement
Updating and Uninstalling Packages with npm

npm Basics (retiring)

Achieved
Sep 20, 2017
Achievement
Installing Packages with npm

npm Basics (retiring)

Achieved
Sep 20, 2017
Achievement
What is npm?

npm Basics (retiring)

Achieved
Sep 19, 2017
Achievement
Go Further With Mongo

Mongo Basics

Achieved
Sep 19, 2017
Achievement
Working With Collections

Mongo Basics

Achieved
Sep 19, 2017
Achievement
Understanding MongoDB

Mongo Basics

Achieved
Sep 18, 2017
Achievement
Getting Started with MongoDB

Mongo Basics

Achieved
Sep 18, 2017
Achievement
Serving Static Files in Express

Express Basics

Achieved
Sep 18, 2017
Achievement
Applying Express Knowledge

Express Basics

Achieved
Sep 18, 2017
Achievement
Middleware

Express Basics

Achieved
Sep 18, 2017
Achievement
Deeper into Routing with Express

Express Basics

Achieved
Sep 18, 2017
Achievement
Callbacks and the DOM

Callback Functions in JavaScript

Achieved
Sep 17, 2017
Achievement
Callbacks with Timers

Callback Functions in JavaScript

Achieved
Sep 17, 2017
Achievement
Introduction to Callback Functions

Callback Functions in JavaScript

Achieved
Sep 17, 2017
Achievement
Using Templates with Express

Express Basics

Achieved
Sep 15, 2017
Achievement
Getting Started with Express

Express Basics

Achieved
Sep 15, 2017
Achievement
Creating a Command Line Weather Application

Node.js Basics 2017

Achieved
Sep 15, 2017
Achievement
Handling Errors in Node

Node.js Basics 2017

Achieved
Sep 15, 2017
Achievement
Getting Data From an API With Node

Node.js Basics 2017

Achieved
Sep 15, 2017
Achievement
Introduction to Node.js

Node.js Basics 2017

Achieved
Sep 13, 2017
Achievement
Reformatting User Input

Regular Expressions in JavaScript

Achieved
Sep 13, 2017
Achievement
Validating a Form with Regular Expressions

Regular Expressions in JavaScript

Achieved
Sep 13, 2017
Achievement
Regular Expressions

Regular Expressions in JavaScript

Achieved
Sep 11, 2017
Achievement
Building a Layout with Flexbox

CSS Flexbox Layout

Achieved
Sep 10, 2017
Achievement
Flexbox Properties

CSS Flexbox Layout

Achieved
Sep 9, 2017
Achievement
Understanding Flexbox

CSS Flexbox Layout

Achieved
Sep 9, 2017
Achievement
Responsive Patterns

Responsive Layouts

Achieved
Sep 8, 2017
Achievement
Media Queries

Responsive Layouts

Achieved
Sep 8, 2017
Achievement
Responsive Theory

Responsive Layouts

Achieved
Sep 8, 2017
Achievement
Letter Game App

Python Basics (2015)

Achieved
Aug 29, 2017
Achievement
Number Game App

Python Basics (2015)

Achieved
Aug 28, 2017
Achievement
Shopping List App

Python Basics (2015)

Achieved
Aug 25, 2017
Achievement
Logic in Python

Python Basics (2015)

Achieved
Aug 25, 2017
Achievement
Python Data Types

Python Basics (2015)

Achieved
Aug 24, 2017
Achievement
Python For Beginners

Python Basics (2015)

Achieved
Aug 20, 2017
Achievement
Local WordPress Development

Local WordPress Development

Achieved
Mar 30, 2017
Achievement
WordPress Plugin Best Practices

Build a Website with WordPress

Achieved
Mar 29, 2017
Achievement
WordPress Widgets

Build a Website with WordPress

Achieved
Mar 29, 2017
Achievement
Custom Post Types in WordPress

Build a Website with WordPress

Achieved
Mar 29, 2017
Achievement
Customizing WordPress Themes

Build a Website with WordPress

Achieved
Mar 29, 2017
Achievement
WordPress Themes

Build a Website with WordPress

Achieved
Mar 29, 2017
Achievement
What Is WordPress?

What Is WordPress?

Achieved
Mar 29, 2017
Achievement
Introduction to Methods

Object-Oriented JavaScript (2015)

Achieved
Mar 29, 2017
Achievement
Data Retreiver

C# Streams and Data Processing

Achieved
Mar 2, 2017
Achievement
Serialized!

C# Streams and Data Processing

Achieved
Mar 2, 2017
Achievement
Data Parser

C# Streams and Data Processing

Achieved
Mar 1, 2017
Achievement
Data Reader

C# Streams and Data Processing

Achieved
Mar 1, 2017
Achievement
GET and POST Requests in a Browser

HTTP Basics

Achieved
Feb 28, 2017
Achievement
Introduction to HTTP

HTTP Basics

Achieved
Feb 28, 2017
Achievement
Abstraction

Intermediate C#

Achieved
Feb 27, 2017
Achievement
System.Object

Intermediate C#

Achieved
Feb 27, 2017
Achievement
Polymorphism

Intermediate C#

Achieved
Feb 25, 2017
Achievement
Improving Our Todo App

AngularJS Basics (1.x)

Achieved
Jan 1, 2017
Achievement
Services in Angular

AngularJS Basics (1.x)

Achieved
Dec 31, 2016
Achievement
Using Angular's Built-in Directives

AngularJS Basics (1.x)

Achieved
Dec 12, 2016
Achievement
Controllers and Scope

AngularJS Basics (1.x)

Achieved
Dec 12, 2016
Achievement
Getting Started with Angular

AngularJS Basics (1.x)

Achieved
Dec 12, 2016
Achievement
AJAX and APIs

AJAX Basics (retiring)

Achieved
Dec 5, 2016
Achievement
jQuery and AJAX

AJAX Basics (retiring)

Achieved
Dec 5, 2016
Achievement
Programming AJAX

AJAX Basics (retiring)

Achieved
Dec 4, 2016
Achievement
AJAX Concepts

AJAX Basics (retiring)

Achieved
Dec 4, 2016
Achievement
Adding a List Page

ASP.NET MVC Basics

Achieved
Nov 27, 2016
Achievement
Views

ASP.NET MVC Basics

Achieved
Nov 21, 2016
Achievement
Building Forms with Bootstrap

Bootstrap 4 Basics (Retired)

Achieved
Nov 20, 2016
Achievement
Using Bootstrap Components

Bootstrap 4 Basics (Retired)

Achieved
Nov 20, 2016
Achievement
Responsive Layouts with the Bootstrap Grid

Bootstrap 4 Basics (Retired)

Achieved
Nov 20, 2016
Achievement
Getting to Know Bootstrap 4

Bootstrap 4 Basics (Retired)

Achieved
Nov 20, 2016
Achievement
Selecting Elements and Adding Events with JavaScript

Interactive Web Pages with JavaScript

Achieved
Nov 13, 2016
Achievement
JavaScript and the DOM

Interactive Web Pages with JavaScript

Achieved
Nov 12, 2016
Achievement
Creating a Simple Drawing Application

jQuery Basics (2014)

Achieved
Nov 12, 2016
Achievement
Computer Languages

Computer Basics

Achieved
Oct 28, 2016
Achievement
Computer Basics

Computer Basics

Achieved
Oct 28, 2016
Achievement
Getting the REST You Need

REST API Basics

Achieved
Oct 28, 2016
Achievement
Creating a Password Confirmation Form

jQuery Basics (2014)

Achieved
Oct 27, 2016
Achievement
Creating a Mobile Drop Down Menu

jQuery Basics (2014)

Achieved
Oct 27, 2016
Achievement
Choosing Options

HTML Forms

Achieved
Oct 20, 2016
Achievement
Organizing Forms

HTML Forms

Achieved
Oct 19, 2016
Achievement
Form Basics

HTML Forms

Achieved
Oct 19, 2016
Achievement
Controllers

ASP.NET MVC Basics

Achieved
Oct 4, 2016
Achievement
Project Setup

ASP.NET MVC Basics

Achieved
Oct 4, 2016
Achievement
Getting There

Java Data Structures

Achieved
Jun 24, 2016
Achievement
Delivering the MVP

Java Objects (Retired)

Achieved
Jun 22, 2016
Achievement
Creating the MVP

Java Objects (Retired)

Achieved
Jun 21, 2016
Achievement
Harnessing the Power of Objects

Java Objects (Retired)

Achieved
Jun 19, 2016
Achievement
Meet Objects

Java Objects (Retired)

Achieved
Jun 19, 2016
Achievement
Perfecting the Prototype

Java Basics

Achieved
Jun 19, 2016
Achievement
Using your New Tools

Java Basics

Achieved
Jun 18, 2016
Achievement
Getting Started with Java

Java Basics

Achieved
Jun 18, 2016
Achievement
Loops and Final Touches

C# Objects

Achieved
Jun 17, 2016
Achievement
Encapsulation with Properties

C# Objects

Achieved
Jun 17, 2016
Achievement
Encapsulation and Arrays

C# Objects

Achieved
Jun 16, 2016
Achievement
Inheritance

C# Objects

Achieved
Jun 15, 2016
Achievement
Methods

C# Objects

Achieved
Jun 14, 2016
Achievement
Methods

C# Objects

Achieved
Jun 14, 2016
Achievement
Object-Oriented Programming

C# Objects

Achieved
Jun 13, 2016
Achievement
Perfect

C# Basics (Retired)

Achieved
Jun 10, 2016
Achievement
Perform

C# Basics (Retired)

Achieved
Jun 10, 2016
Achievement
Console I/O

C# Basics (Retired)

Achieved
Jun 10, 2016
Achievement
Prepare and Plan

C# Basics (Retired)

Achieved
Jun 6, 2016
Achievement
Date and Time Functions

Reporting with SQL

Achieved
Mar 15, 2016
Achievement
Aggregate and Numeric Functions

Reporting with SQL

Achieved
Mar 14, 2016
Achievement
Working with Text

Reporting with SQL

Achieved
Mar 13, 2016
Achievement
Ordering, Limiting and Paging Results

Reporting with SQL

Achieved
Mar 13, 2016
Achievement
Finding the Data You Want

SQL Basics

Achieved
Mar 11, 2016
Achievement
Getting Data from a Database

SQL Basics

Achieved
Mar 11, 2016
Achievement
Data, Databases and SQL

SQL Basics

Achieved
Mar 11, 2016
Achievement
Simple Mobile Interface

Sketch Basics

Achieved
Mar 3, 2016
Achievement
Exporting Designs

Sketch Basics

Achieved
Mar 2, 2016
Achievement
Sketch Features

Sketch Basics

Achieved
Mar 2, 2016
Achievement
Introducing Sketch

Sketch Basics

Achieved
Mar 2, 2016
Achievement
Reading Data from Databases with SQL

Database Foundations

Achieved
Oct 30, 2015
Achievement
Installing MySQL Server and MySQL Workbench

Database Foundations

Achieved
Oct 30, 2015
Achievement
Introduction to Data, Databases and SQL

Database Foundations

Achieved
Oct 30, 2015
Achievement
Workflows

Git Basics

Achieved
Oct 12, 2015
Achievement
Working With Remote Repositories

Git Basics

Achieved
Oct 11, 2015
Achievement
Merging

Git Basics

Achieved
Oct 11, 2015
Achievement
Branches

Git Basics

Achieved
Oct 11, 2015
Achievement
Getting Started With Git

Git Basics

Achieved
Oct 11, 2015
Achievement
Why Version Control Matters

Git Basics

Achieved
Oct 11, 2015
Achievement
Creating a Simple Lightbox

jQuery Basics (2014)

Achieved
Oct 11, 2015
Achievement
Creating a Spoiler Revealer

jQuery Basics (2014)

Achieved
Oct 11, 2015
Achievement
Introduction to jQuery

jQuery Basics (2014)

Achieved
Oct 11, 2015
Achievement
JavaScript Objects

JavaScript Loops, Arrays and Objects

Achieved
Oct 9, 2015
Achievement
JavaScript Arrays

JavaScript Loops, Arrays and Objects

Achieved
Oct 9, 2015
Achievement
JavaScript Loops

JavaScript Loops, Arrays and Objects

Achieved
Oct 9, 2015
Achievement
JavaScript Functions

JavaScript Basics (Retired)

Achieved
Oct 8, 2015
Achievement
JavaScript Conditional Statements

JavaScript Basics (Retired)

Achieved
Oct 8, 2015
Achievement
JavaScript Numbers

JavaScript Basics (Retired)

Achieved
Oct 8, 2015
Achievement
JavaScript Variables

JavaScript Basics (Retired)

Achieved
Oct 8, 2015
Achievement
Introducing JavaScript

JavaScript Basics (Retired)

Achieved
Oct 8, 2015
Achievement
PHP Datatypes

PHP Basics (Retired)

Achieved
Aug 19, 2015
Achievement
PHP Data & Structure

PHP Basics (Retired)

Achieved
Aug 17, 2015
Achievement
PHP Getting Started

PHP Basics (Retired)

Achieved
Aug 16, 2015
Achievement
Fundamental Concepts

CSS Basics (2014)

Achieved
Jul 9, 2015
Achievement
Designing with the Latest Features

CSS Basics (2014)

Achieved
Jul 9, 2015
Achievement
Basic Layout

CSS Basics (2014)

Achieved
Jul 8, 2015
Achievement
The Box Model

CSS Basics (2014)

Achieved
Jul 7, 2015
Achievement
Understanding Values and Units

CSS Basics (2014)

Achieved
Jul 7, 2015
Achievement
Basic Selectors

CSS Basics (2014)

Achieved
May 16, 2015
Achievement
Getting Started with CSS

CSS Basics (2014)

Achieved
May 15, 2015
Achievement
Debugging HTML and CSS Problems

How to Make a Website

Achieved
May 15, 2015
Achievement
Sharing a Website

How to Make a Website

Achieved
May 14, 2015
Achievement
Responsive Web Design and Testing

How to Make a Website

Achieved
May 14, 2015
Achievement
Adding Pages to a Website

How to Make a Website

Achieved
May 14, 2015
Achievement
Styling Web Pages and Navigation

How to Make a Website

Achieved
May 12, 2015
Achievement
Customizing Colors and Fonts

How to Make a Website

Achieved
May 12, 2015
Achievement
CSS: Cascading Style Sheets

How to Make a Website

Achieved
May 11, 2015
Achievement
Creating HTML Content

How to Make a Website

Achieved
May 9, 2015
Achievement
HTML First

How to Make a Website

Achieved
May 9, 2015
Achievement
Beginning HTML and CSS

How to Make a Website

Achieved
May 9, 2015
Achievement
Newbie

Achieved
May 8, 2015