Blog

Mert Özen's blog posts on software development, backend, frontend, and DevOps.

Series

.NET Core Web API 36 Angular 31 JavaScript Basics 19 JavaScript Intermediate 18 JavaScript Advanced 16 TypeScript Basics 14 TypeScript Intermediate 14 TypeScript Advanced 12

2 posts found #promise

Newest Oldest Popular

Frontend PART 09

JavaScript Promises: Three States, the then/catch/finally Chain and Error Propagation

We build the three promise states with a restaurant buzzer analogy and work through new Promise, then/catch/finally, chaining, error propagation, Promise.all and race, and wrapping callbacks.

3 Nov 2026 8 min 5

Frontend PART 10

JavaScript async/await: Readable Async Code, Error Handling and Waiting in Parallel

We see why async functions always return promises, how await waits without freezing the page, catching errors with try/catch, sequential versus parallel waiting, the await-in-a-loop trap and top-level await.

3 Nov 2026 8 min 4