Jeff Lange

Jeff Lange

Los Angeles, California

8,788

Total Points

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Skills & Experience

  • Job Title

    Rails Developer

105 Achievements

  • Achievement

    Stateful Components and Lifecycle Methods

    React Components (2018)

    Achieved

    Dec 1, 2018

    Stateful Components and Lifecycle Methods
  • Achievement

    Managing State and Data Flow

    React Components (2018)

    Achieved

    Nov 29, 2018

    Managing State and Data Flow
  • Achievement

    Build Modular Interfaces with Components

    React Components (2018)

    Achieved

    Nov 19, 2018

    Build Modular Interfaces with Components
  • Achievement

    Practicing Object Basics

    Practice Object Basics in JavaScript

    Achieved

    Oct 28, 2018

    Practicing Object Basics
  • Achievement

    Stateful Components

    React Basics (2018)

    Achieved

    Oct 26, 2018

    Stateful Components
  • Achievement

    Practicing Classes

    Practice Classes in JavaScript

    Achieved

    Oct 24, 2018

    Practicing Classes
  • Achievement

    Practicing Getters and Setters

    Practice Getters and Setters in JavaScript

    Achieved

    Oct 24, 2018

    Practicing Getters and Setters
  • Achievement

    Introducing Props

    React Basics (2018)

    Achieved

    Oct 22, 2018

    Introducing Props
  • Achievement

    Thinking in Components

    React Basics (2018)

    Achieved

    Oct 16, 2018

    Thinking in Components
  • Achievement

    First Steps in React

    React Basics (2018)

    Achieved

    Oct 16, 2018

    First Steps in React
  • Achievement

    Logic in Python

    Python Basics (2015)

    Achieved

    Dec 30, 2017

    Logic in Python
  • Achievement

    Python Data Types

    Python Basics (2015)

    Achieved

    Dec 30, 2017

    Python Data Types
  • Achievement

    Python For Beginners

    Python Basics (2015)

    Achieved

    Dec 30, 2017

    Python For Beginners
  • Achievement

    Programming AJAX

    AJAX Basics (retiring)

    Achieved

    Dec 4, 2015

    Programming AJAX
  • Achievement

    JavaScript Loops

    JavaScript Loops, Arrays and Objects

    Achieved

    Dec 3, 2015

    JavaScript Loops
  • Achievement

    AJAX Concepts

    AJAX Basics (retiring)

    Achieved

    Dec 2, 2015

    AJAX Concepts
  • Achievement

    JavaScript Functions

    JavaScript Basics (Retired)

    Achieved

    Dec 1, 2015

    JavaScript Functions
  • Achievement

    JavaScript Conditional Statements

    JavaScript Basics (Retired)

    Achieved

    Nov 24, 2015

    JavaScript Conditional Statements
  • Achievement

    Route Connections

    Build a Rails API

    Achieved

    Jul 7, 2015

    Route Connections
  • Achievement

    Introduction to REST

    Build a Rails API

    Achieved

    Jul 7, 2015

    Introduction to REST
  • Achievement

    JavaScript Numbers

    JavaScript Basics (Retired)

    Achieved

    Jun 19, 2015

    JavaScript Numbers
  • Achievement

    JavaScript Variables

    JavaScript Basics (Retired)

    Achieved

    Jun 17, 2015

    JavaScript Variables
  • Achievement

    Introducing JavaScript

    JavaScript Basics (Retired)

    Achieved

    Jun 13, 2015

    Introducing JavaScript
  • Achievement

    Fundamental Concepts

    CSS Basics (2014)

    Achieved

    Jun 13, 2015

    Fundamental Concepts
  • Achievement

    Designing with the Latest Features

    CSS Basics (2014)

    Achieved

    Jun 12, 2015

    Designing with the Latest Features
  • Achievement

    Basic Layout

    CSS Basics (2014)

    Achieved

    Jun 9, 2015

    Basic Layout
  • Achievement

    The Box Model

    CSS Basics (2014)

    Achieved

    Jun 5, 2015

    The Box Model
  • Achievement

    Understanding Values and Units

    CSS Basics (2014)

    Achieved

    Jun 5, 2015

    Understanding Values and Units
  • Achievement

    Basic Selectors

    CSS Basics (2014)

    Achieved

    Jun 5, 2015

    Basic Selectors
  • Achievement

    Getting Started with CSS

    CSS Basics (2014)

    Achieved

    May 29, 2015

    Getting Started with CSS
  • Achievement

    Password Resets and Testing

    User Authentication with Rails

    Achieved

    Nov 26, 2014

    Password Resets and Testing
  • Achievement

    Adding User Support to Our Application

    User Authentication with Rails

    Achieved

    Nov 25, 2014

    Adding User Support to Our Application
  • Achievement

    Password Hashing and Sign-In

    User Authentication with Rails

    Achieved

    Nov 24, 2014

    Password Hashing and Sign-In
  • Achievement

    AR Extensions

    ActiveRecord Basics

    Achieved

    Nov 19, 2014

    AR Extensions
  • Achievement

    Callbacks

    ActiveRecord Basics

    Achieved

    Nov 19, 2014

    Callbacks
  • Achievement

    Query Interface

    ActiveRecord Basics

    Achieved

    Nov 19, 2014

    Query Interface
  • Achievement

    Getting Started with CSS

    CSS Foundations

    Achieved

    Nov 18, 2014

    Getting Started with CSS
  • Achievement

    Choosing Options

    HTML Forms

    Achieved

    Nov 18, 2014

    Choosing Options
  • Achievement

    Organizing Forms

    HTML Forms

    Achieved

    Nov 17, 2014

    Organizing Forms
  • Achievement

    Validation

    ActiveRecord Basics

    Achieved

    Nov 17, 2014

    Validation
  • Achievement

    Form Basics

    HTML Forms

    Achieved

    Nov 12, 2014

    Form Basics
  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    Nov 12, 2014

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Nov 12, 2014

    Getting Started with Java
  • Achievement

    Migrations and Relationships

    ActiveRecord Basics

    Achieved

    Nov 6, 2014

    Migrations and Relationships
  • Achievement

    Introduction to ActiveRecord

    ActiveRecord Basics

    Achieved

    Nov 3, 2014

    Introduction to ActiveRecord
  • Achievement

    Securing and Maintaining a MySQL Database

    Database Foundations

    Achieved

    Nov 3, 2014

    Securing and Maintaining a MySQL Database
  • Achievement

    SQL Calculating, Aggregating and Other Functions

    Database Foundations

    Achieved

    Nov 3, 2014

    SQL Calculating, Aggregating and Other Functions
  • Achievement

    Joining Relational Data Between Tables in SQL

    Database Foundations

    Achieved

    Nov 3, 2014

    Joining Relational Data Between Tables in SQL
  • Achievement

    Manipulating Schema with SQL

    Database Foundations

    Achieved

    Nov 3, 2014

    Manipulating Schema with SQL
  • Achievement

    Creating Tables and Manipulating Data with SQL

    Database Foundations

    Achieved

    Oct 31, 2014

    Creating Tables and Manipulating Data with SQL
  • Achievement

    Reading Data from Databases with SQL

    Database Foundations

    Achieved

    Oct 29, 2014

    Reading Data from Databases with SQL
  • Achievement

    Installing MySQL Server and MySQL Workbench

    Database Foundations

    Achieved

    Oct 29, 2014

    Installing MySQL Server and MySQL Workbench
  • Achievement

    Introduction to Data, Databases and SQL

    Database Foundations

    Achieved

    Oct 28, 2014

    Introduction to Data, Databases and SQL
  • Achievement

    Build a Todo List Application with Rails 4

    Build a Todo List Application with Rails 4

    Achieved

    Oct 28, 2014

    Build a Todo List Application with Rails 4
  • Achievement

    Ruby Testing

    Ruby Foundations

    Achieved

    Oct 15, 2014

    Ruby Testing
  • Achievement

    Standard Library

    Ruby Foundations

    Achieved

    Oct 8, 2014

    Standard Library
  • Achievement

    Ruby Core

    Ruby Foundations

    Achieved

    Sep 24, 2014

    Ruby Core
  • Achievement

    Ruby Modules

    Ruby Foundations

    Achieved

    Sep 22, 2014

    Ruby Modules
  • Achievement

    Ruby Procs & Lambdas

    Ruby Foundations

    Achieved

    Sep 17, 2014

    Ruby Procs & Lambdas
  • Achievement

    Ruby Blocks

    Ruby Foundations

    Achieved

    Sep 10, 2014

    Ruby Blocks
  • Achievement

    Ruby Loops

    Ruby Foundations

    Achieved

    Sep 9, 2014

    Ruby Loops
  • Achievement

    Ruby Methods

    Ruby Foundations

    Achieved

    Sep 9, 2014

    Ruby Methods
  • Achievement

    Ruby Hashes

    Ruby Foundations

    Achieved

    Aug 25, 2014

    Ruby Hashes
  • Achievement

    Ruby Arrays

    Ruby Foundations

    Achieved

    Aug 1, 2014

    Ruby Arrays
  • Achievement

    Ruby Methods

    Ruby Basics (Retired)

    Achieved

    Aug 1, 2014

    Ruby Methods
  • Achievement

    Ruby Numbers (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Aug 1, 2014

    Ruby Numbers (Ruby Basics)
  • Achievement

    Ruby Strings (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Aug 1, 2014

    Ruby Strings (Ruby Basics)
  • Achievement

    How Ruby Works

    Ruby Basics (Retired)

    Achieved

    Jul 31, 2014

    How Ruby Works
  • Achievement

    Ruby Numbers

    Ruby Foundations

    Achieved

    Jul 31, 2014

    Ruby Numbers
  • Achievement

    Ruby Strings

    Ruby Foundations

    Achieved

    Jul 31, 2014

    Ruby Strings
  • Achievement

    Objects, Classes, and Variables

    Ruby Foundations

    Achieved

    Jul 29, 2014

    Objects, Classes, and Variables
  • Achievement

    Ruby Basics

    Ruby Foundations

    Achieved

    Jul 29, 2014

    Ruby Basics
  • Achievement

    Installing a Ruby Development Environment

    Installing a Ruby Development Environment

    Achieved

    Jul 24, 2014

    Installing a Ruby Development Environment
  • Achievement

    Workflows

    Git Basics

    Achieved

    Jul 23, 2014

    Workflows
  • Achievement

    Working With Remote Repositories

    Git Basics

    Achieved

    Jul 23, 2014

    Working With Remote Repositories
  • Achievement

    Merging

    Git Basics

    Achieved

    Jul 23, 2014

    Merging
  • Achievement

    Branches

    Git Basics

    Achieved

    Jul 23, 2014

    Branches
  • Achievement

    Getting Started With Git

    Git Basics

    Achieved

    Jul 23, 2014

    Getting Started With Git
  • Achievement

    Why Version Control Matters

    Git Basics

    Achieved

    Jul 22, 2014

    Why Version Control Matters
  • Achievement

    Installing Programs

    Console Foundations

    Achieved

    Jul 22, 2014

    Installing Programs
  • Achievement

    Environment and Redirection

    Console Foundations

    Achieved

    Jul 22, 2014

    Environment and Redirection
  • Achievement

    Console Processes

    Console Foundations

    Achieved

    Jul 22, 2014

    Console Processes
  • Achievement

    Console Users and Permission

    Console Foundations

    Achieved

    Jul 22, 2014

    Console Users and Permission
  • Achievement

    Moving Around in the Console

    Console Foundations

    Achieved

    Jul 21, 2014

    Moving Around in the Console
  • Achievement

    JavaScript Objects

    JavaScript Foundations

    Achieved

    Jul 21, 2014

    JavaScript Objects
  • Achievement

    JavaScript Functions

    JavaScript Foundations

    Achieved

    Jul 18, 2014

    JavaScript Functions
  • Achievement

    JavaScript Arrays

    JavaScript Foundations

    Achieved

    Jul 17, 2014

    JavaScript Arrays
  • Achievement

    JavaScript Numbers

    JavaScript Foundations

    Achieved

    Jul 17, 2014

    JavaScript Numbers
  • Achievement

    JavaScript Strings

    JavaScript Foundations

    Achieved

    Jul 16, 2014

    JavaScript Strings
  • Achievement

    Introduction Variables

    JavaScript Foundations

    Achieved

    Jul 16, 2014

    Introduction Variables
  • Achievement

    Functions

    Introduction to Programming

    Achieved

    Jul 15, 2014

    Functions
  • Achievement

    Objects and Arrays

    Introduction to Programming

    Achieved

    Jul 14, 2014

    Objects and Arrays
  • Achievement

    Control Structures

    Introduction to Programming

    Achieved

    Jul 14, 2014

    Control Structures
  • Achievement

    Basics

    Introduction to Programming

    Achieved

    Jul 12, 2014

    Basics
  • Achievement

    Debugging HTML and CSS Problems

    How to Make a Website

    Achieved

    Jul 11, 2014

    Debugging HTML and CSS Problems
  • Achievement

    Sharing a Website

    How to Make a Website

    Achieved

    Jul 11, 2014

    Sharing a Website
  • Achievement

    Responsive Web Design and Testing

    How to Make a Website

    Achieved

    Jul 11, 2014

    Responsive Web Design and Testing
  • Achievement

    Adding Pages to a Website

    How to Make a Website

    Achieved

    Jul 10, 2014

    Adding Pages to a Website
  • Achievement

    Styling Web Pages and Navigation

    How to Make a Website

    Achieved

    Jul 7, 2014

    Styling Web Pages and Navigation
  • Achievement

    Customizing Colors and Fonts

    How to Make a Website

    Achieved

    Jun 14, 2014

    Customizing Colors and Fonts
  • Achievement

    CSS: Cascading Style Sheets

    How to Make a Website

    Achieved

    Jun 5, 2014

    CSS: Cascading Style Sheets
  • Achievement

    Creating HTML Content

    How to Make a Website

    Achieved

    Jun 4, 2014

    Creating HTML Content
  • Achievement

    HTML First

    How to Make a Website

    Achieved

    Jun 1, 2014

    HTML First
  • Achievement

    Beginning HTML and CSS

    How to Make a Website

    Achieved

    May 30, 2014

    Beginning HTML and CSS
  • Achievement

    Newbie

    Achieved

    May 30, 2014

    Newbie