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JavaScript

Practical tutorials for the work we actually do. Pick one, read it in order, and apply it.

Any category Programming7 Python 2 JavaScript 3 TypeScript 2
Any topics APIs and Integrations 3 Automation and Scripting 1 Object-Oriented Programming 1 Packaging and Dependencies 1 Performance Optimization 6 Programming Patterns 5 Testing and Debugging 3 Type Systems 1 Web Development 2
Any level Intermediate 2 Advanced 3
JavaScript APIs and Integrations Advanced Clear filters 3 results
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Batch API Calls With Promise.allSettled

Send many requests, keep the successes, and report the failures instead of losing everything to one rejected promise. Plus limiting how many run at once.

4 min read
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Add a Timeout to fetch With AbortController

fetch has no timeout option and can wait a very long time. AbortSignal.timeout(ms) fixes that in one line, and AbortSignal.any combines it with a cancel button.

4 min read
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Paginate an API With an Async Generator

Hide page numbers and "next" links inside an async generator, then loop over every record with for await. Stop early and the remaining pages are never fetched.

4 min read