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WDI 34 Learning Objectives

Developers will be able to...

Week 1

###Command Line

  • Navigate the file system from the command line.
  • Create, move, copy, and delete files or directories from the command line.
  • Research unfamiliar bash commands and options with --help, man, and/or online resources.
  • Describe the uses of the sudo and chmod commands.

###HTML & CSS Review

  • Recognize common HTML tags and attributes.
  • Describe the structure of an HTML document.
  • Apply CSS styles to HTML elements based on tag, class, or id.
  • Distinguish among block, inline, and inline-block elements.
  • Draw the CSS box model.

###GitHub Workflow

  • Explain the uses of Git and GitHub for tracking changes and collaborating on projects.
  • Draw a model of local, remote, and working copies of their repositories.
  • Write some code to improve their work, commit the changes, and write a strong commit message.
  • Deploy their first live website using gh-pages.

###JavaScript Data Types

  • Identify JavaScript data types.
  • Declare variables in the Chrome developer tools console.
  • Get and set the values of variables.
  • Use built-in methods to manipulate strings and arrays.

###JavaScript Control Flow

  • Predict the output of boolean expressions, including "truthy" and "falsey" values.
  • Write syntactically correct conditional statements.
  • Compare & contrast for and while loops.

###JavaScript Functions

  • Identify the differences between defining a function and calling (invoking) a function (casting the spell).
  • Create a simple function that prints a value (for the user/developer to see a result) and a simple function that returns a value (for the rest of the code to use a result). Distinguish between the impact of these different results.
  • Draw a model of a function that includes arguments as input, side effects, and return values as output.
  • Explain the scope of a function.

###Chrome Dev Tools and Debugging

  • Use the console tab to gather diagnostic information about code (read various error messages and logs of their own creation).
  • Use the console tab to interact with the JavaScript on the page.
  • Use the elements tab to view an manipulate the DOM and styling.
  • View sites in mobile mode with the device mode.

###DOM Manipulation

  • Describe and draw the document object model (DOM) of a simple HTML document.
  • Use the elements tab to view and manipulate the DOM and styling.
  • Explain the relationship between JavaScript and jQuery and the benefits of using jQuery for DOM manipulation.
  • Select elements from the page using CSS selectors and use jQuery to dynamically change the DOM.

###DOM Events

  • Explain what DOM events are and how they are triggered.
  • Attach event listeners to DOM elements.
  • Target the source of an event.
  • Respond to events with a callback.
  • Explain event propagation.


  • Implement class-based CSS.
  • Use a CDN to import Bootstrap into projects.
  • Effectively use a grid system to space elements across the page.
  • Improve the design of HTML pages with the aid of Bootstrap & mockups

Week 2

###Iterator Methods & Callbacks

  • Use appropriate iterator methods to declaratively loop through collections
  • Follow the order of execution in a program that uses callbacks
  • Write a higher-order function that calls a custom callback


  • Create an object that contains a variety of data types
  • Access attributes of an object using . syntax and [] syntax
  • Articulate the usefulness of JSON

###HTML Forms

  • Explain the basics of the client/server model
  • Compare and contrast the available input options for HTML forms
  • Use a method and an action to submit form data
  • Generate query parameters using a form


  • Articulate why AJAX is useful and how it works
  • Create an AJAX request that fetches data
  • Describe the meaning of method:, url:, and onSuccess: keys for jQuery's $.ajax object

Data Templating w/ Handlebars

  • Articulate the usefulness of data templating in the browser
  • Create and compile a Handlebars template
  • Use Handlebars templating to display JSON data

Object Oriented JavaScript

  • Instantiate new objects using Javascript constructors
  • Create shared methods amongst instances with prototypes
  • Model real-world data and relationships with JavaScript objects

Week 3


  • Draw a diagram of the request-response cycle with Node.js and Express included and labeled
  • Describe the roles that Node.js and Express play in building a server
  • Use npm to initialize a Node.js project
  • Write a local web server to serve JSON and static assets with Express

###Express Routes & Parameters

  • Create flexible, dynamic routes with parameterized route urls
  • Process data sent to a server through query strings
  • Process data sent from named form fields (as with POST requests)
  • Identify Express routing patterns that can be used for PUT, PATCH, and DELETE requests


  • Explain how MongoDB and Mongoose are related
  • Describe the relationship between schemas and models in Mongoose
  • Create Mongoose model instances
  • Using Mongoose, integrate a MongoDB database with an Express project

###Mongoose relationships

  • Describe one-to-one, one-to-many, and many-to-many data relationships
  • Write mongoose schemas that can reference and embed data
  • Reflect model relationships in server routes

###Personal API & Heroku

  • Deploy server side code to Heroku to make an API publically accessible
  • Write an API documentation endpoint at the /api path
  • Build an API from scratch

Week 4(B)

###Big O

  • Articulate a set of steps to determine Big O complexity.
  • List the Big O complexities of some commonly-used patterns and algorithms.
  • Estimate the time or space efficiency of an algorithm using Big O notation.

###Binary Search

  • Describe the binary search algorithm and identify its advantages and disadvantages.
  • Write a pseudocode version of binary search and a javascript version of binary search.
  • Determine the runtime (in big-O notation) for binary search.

###Intro Angular

  • Explain the benefits of using Angular and describe the problems Angular aims to solve.
  • Initialize Angular in an HTML view, and use expressions and templates to impact the DOM.
  • Organize the code into controllers and connect the View & Controller using this.
  • Implement 2-way data binding.

###Angular $http

  • Inject a service into a controller.
  • Read data with $http.
  • Create data with $http.
  • Update data with $http.
  • Delete data with $http.
  • Update the view to reflect a successful state change.

Week 5

###Angular Client-side Routing

  • Compare and contrast client-side and server-side routing.
  • Add a module to an Angular project.
  • Implement client-side routing with the ngRoute module.
  • Display view template files with the ng-view directive.

###Custom Directives

  • Explain the justifications for using custom directives.
  • Describe the directive definition object and implement it in creating a directive.
  • Integrate a third party directive into your code.


  • Explain the purpose of promises.
  • Draw the lifecycle of a promise.
  • Manipulate promises using Angular’s $q service.


  • Explain motivations for using services.
  • Create a custom service.
  • Use promises in a custom service.

Week 6

###Ruby Intro

  • List Ruby data types.
  • Articulate strategies to learn new programming languages and frameworks.
  • Run Ruby code in an interactive Command Line Interface or from a file.

###Ruby Methods

  • Write conditionals, loops, and methods in Ruby.
  • Apply methods in ruby to solve problems.
  • Explain the two main differences between Ruby methods and JavaScript functions: isolated scope and implicit return.

###Ruby OOP

  • Define the OOP terms “class,” “instance,” and “inheritance.”
  • Create your own classes and instances.
  • Define attributes and methods for instances or for the class as a whole.
  • Explain and implement the class-based inheritance pattern.


  • Justify writing unit tests.
  • Explain important testing concepts: edge cases and test coverage.
  • Read and explain Rspec tests.
  • Write DRY and effective test code using RSpec.

###Rails Intro

  • Articulate the Rails philosophy and the MVC pattern.
  • Start a Rails project with no database and create routes that render dynamic templates.
  • Distinguish between Express and Rails.

Week 7

###Active Record

  • Create a model that inherits from ActiveRecord class
  • CRUD data in the database using our model
  • Write a migration to define a database schema
  • Update our database schema with another migration

###Rails Views

  • Describe how layouts, view templates, and partial templates work together.
  • Recognize rails url helpers and path helpers.
  • Explain benefits of using Rails form helpers and link helpers.
  • Find and determine correct syntax for Rails form helpers and link helpers.


  • Add and remove columns from the database.
  • Alter an existing column.
  • Explain when it is okay to edit a migration and when it is okay to edit the schema.

###Error Handling and Validations

  • Use built-in ActiveRecord validation methods to validate database entries.
  • Display errors in the view using Rails flash messages.
  • Set breakpoints to check your assumptions.


  • Describe how relational databases can be used to create associations between resources.
  • Create one to-many-model relationships in Rails.
  • Create many to-many-model relationships in Rails.

###Cookies and Sessions

  • Describe the request and response cycle's relationship to the stateless web.
  • Discuss and use an HTTP Cookie in a web application.
  • Differentiate between an HTTP Cookie and a Session.

###Rails Auth

  • Build routes, controllers, and views for user sign up, log in, and logout.
  • Implement a User model that securely stores hashed passwords with has_secure_password.
  • Compare and contrast authentication and authorization.

Week 8

###Asset Pipeline

  • Explain benefits of using the Rails asset pipeline.
  • Require custom and third-party assets in Rails.

###Rspec with Rails

  • Identify aspects of Rails apps that we might want to test.
  • Differentiate between integration testing and unit testing.
  • List tools that are used to test Rails applications.
  • Test model methods using rspec-rails.
  • Test controller actions using rspec-rails.

###Bubble Sort

  • Describe bubble sort algorithm and identify its advantages and disadvantages.
  • Write a pseudocode version of bubble sort and a ruby version of bubble sort.
  • Determine the runtime (in big-O() notation) for bubble sort.


  • Pseudocode an algorithm to merge two sorted arrays, and implement the algorihtm in ruby.

###Recursion & Merge Sort

  • Explain three steps to create a recursive algorithm.
  • Describe the merge sort algorithm.
  • Write a pseudocode version of merge sort and a ruby version of merge sort.
  • Determine the runtime (in big-O() notation) for merge sort.

Week 9

###Linked Lists

  • Describe the low-level structure of arrays and linked lists.
  • Manipulate linked lists.


  • Describe a stack by its methods and last in, first out (LIFO) behavior.
  • Build stack methods using linked list methods.


  • Describe a queue by its methods and first in, first out (FIFO) behavior.
  • Build queue methods using linked list methods.
  • Compare and contrast stacks and queues and appropriately choose which is better for a given situation.


  • Describe and draw the structure of a hashmap.
  • Explain properties of a good hash function.
  • Perform runtime analysis on the hashmap data structure.


  • Explain the relationship between graphs, trees, and binary search trees.
  • Draw a balanced binary search tree from some given data.
  • Use binary search trees in answering interview style challenge questions.

Week 10

###Breadth First Search

  • Describe and draw breadth-first tree traversal.
  • Pseudocode breadth-first search.
  • Identify use cases for breadth-first search.

###Depth First Search

  • Describe and draw depth-first tree traversal.
  • Compare and contrast depth-first and breadth-first.
  • Pseudocode depth-first search.
  • Identify use cases for depth-first search.

###Rails JSON API

  • Use Rails and jbuilder to build a JSON API without a front end.

###Angular and Rails

  • Build an Angular front end for a Rails JSON API back end.

###MEAN stack review

  • Explain the role of each technology within the MEN/MEAN stack.
  • Give detailed account of the purpose of the different files and folders that make up a MEN/MEAN app.
  • Explain basic Angular setup and write examples of important built-in directives.
  • Identify key Angular concepts: directives, controllers, templates, services, client-side routing.

###MEAN Auth

  • Authenticate users in Express.
  • Restrict access to data based on whether a user is authenticated.
  • Describe various authentication or authorization strategies.

Week 11


  • Explain the history of ECMAScript and JavaScript.
  • List features of JavaScript added with ES6.
  • Write and read JavaScript code that uses new ES6 features:
    • Explain block scope and when to use var, let, and const.
    • Interpolate strings with template literals.
    • Write shorter function declarations with arrow functions.
    • Use default parameters in JavaScript.

Gulp & Webpack (Build Tools)

  • Explain roles of build tools: minification, compilation, concatenation/bundling, compression, file watching, etc.
  • Compare build tools: Rake, Gulp, Webpack.
  • Use build tools to automate workflow.


  • Explain what ReactJS is and where it fits in our applications' stack.
  • Explain the component model of web development.
  • Create and render React components in the browser.

Week 12

Interview Prep - Strategies

  • Follow a planned series of steps when answering in-person technical interview questions.
  • Explain technical thinking to another person while coding or whiteboarding.
  • Follow a planned series of steps when working on take-home technical challenges.
  • Identify interviewing areas of strength and areas to focus on and improve.

Interview Prep - Topics

  • Recognize and apply JavaScript features: this, call, closures.
  • Apply good coding syntax habits even on whiteboard: = vs == vs ===; correct syntax for loops; correct syntax for if/else; semantic variable naming.
  • Identify opportunities to use built-in methods or structures in JavaScript and Ruby.
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