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A trip through functional programming in Javascript using common built-in Javascript array methods such asmap &reduce.

By the end, you should have an understanding of how to use array methods to manipulate semi-complex data.

Level: IntermediateKeywords: javascript, functionalLength: 1-2 hours

CodeRoad is an open-sourced interactive tutorial platform for the Atom Editor. Learn more atCodeRoad.io.

• install the tutorial package

  npm install --save coderoad-functional-school

• install and run theatom-coderoad plugin

Understanding the Data Set

Over this tutorial series, we'll be changing and working with two different data sets. It'll be a big help to first understand what the data looks like.

var students = [  {"title":"Relational Databases","instructor":"Sean Quentin Lewis","name":"Ada Lovelace","score":91,"grade":"A"  },...]

Here we have an array of "student" objects. To get the first item in the array, you can use the array index. Array indexes start at 0.

console.log('first instructor',students[0].instructor);// first instructor Sean Quentin Lewis