Stage 2 · Lesson 5 of 10
Reading JSON and API responses
is the text format that most , configuration files and event logs use. An object sits inside curly braces and holds "key": value pairs, such as "name": "Sara". An is a list inside square brackets.
A value can be text in quotes, a number, true, false, null (meaning empty), or another object or array. Reading JSON comfortably lets you check what an API really returns. It also helps you spot a missing field in a bug report, write accurate docs and build .
Practise by calling a public API in or your browser. Then describe the response in words: what each field means, which fields are optional and which could be null.
Common trapassuming a field is always present because it appeared in one example. Real data has gaps, and good docs and specs say so.
A question to check yourself, an AI practice session and 1 cheat sheet entry come with the full roadmap. Unlock
Resources for this stage
Start with· follow one of these
- VideoFreeCrash Course Computer Science
CrashCourse · Beginner
Short free videos on how computers, networks and software work, pitched at beginners
- CourseFreeSelect Star SQL
Zi Chong Kao · Beginner
A free interactive SQL tutorial on real data, enough for product and docs analytics