Session 1: Arrays, objects, & arrow functions – Intro to data wrangling & analysis in JavaScript
Session 1 topics:
- What are arrays, and how do I work with them?
- Meet Observable notebooks
- JavaScript arrays: structure, terminology, exploring, accessing data in arrays
- Array map, arrow functions
- First chart with Observable Plot
In this course, you’ll learn basic skills and methods for working with data in JavaScript, including: arrays and how to work with them, essential programming methods and operators (like arrow functions, iteration, and logical operators), basic data wrangling, and exploratory analyses with descriptive statistics and data visualization.
Instructor: Allison Horst (Data Scientist Advocate at Observable)
00:00 - Welcome and introduction
04:48 - Why learn JavaScript?
07:15 - Arrays and accessing pieces from them
19:53 - Objects and accessing pieces from them
34:08 - Arrow functions and Array map for data wrangling
44:25 - An example of data wrangling in JavaScript with real world data
53:20 - Meet Observable Plot for exploratory data visualization
Aggregated course materials: https://observablehq.com/collection/@...
Session 1 notebook: https://observablehq.com/@observableh...