Learn about refactoring in the green state. Learn about computable properties and how we should not have them on the state.
- [Instructor] Let's do some refactoring.…First, let me extract this long line here…that fetches a current contest into its own method.…I'm going to call this method this.currentContest.…We need to invoke it, so currentContest is a method…that just returns this line, making sure things still work.…Perfect. We always refactor…in the green state when things are working…and we're not getting any errors.…So what I want you to think about now…is this pageHeader, which we start with a static value…and then, once we click on a contest,…it actually gets its own value from the contest name.…
But this pageHeader can't actually be computed.…We don't need to put it on the state.…If we have a contestId, we're going to…read the current contest name.…If we don't have a current contestId,…we just go with the default naming contest.…So I'm going to actually remove it from the state…and instead, let's create a pageHeader function.…So this is very simple.…If I have a current contestId on the state,…then the pageHeader is going to be this.currentContest,…
- Configuring webpack and Babel
- Working with native Node modules
- Creating an Express server
- Working with React components and JSX
- Loading and working with test mock data
- Fetching data from a remote API
- Working with data in MongoDB
- Isomorphic rendering on the server
- Front-end routing and back-end routing
Skill Level Intermediate
Building a Website with Node.js and Express.jswith Ray Villalobos3h 16m Intermediate
MEAN Stack and MongoDB: Development Techniqueswith Alexander Zanfir1h 48m Intermediate
1. Getting Started
2. Node as a Web Server
3. React Basics
4. Working with Data
5. Rendering on the Server
Fix the checksum problem6m 11s
6. Routing on Client and Server
7. Working with MongoDB
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