- How Web Apps Work by Mark Erikson - has a nice description of the mess that is (was) JS module formats
- Modern JS Cheatsheet
- Understanding JavaScript Function Invocation and "this" by Yehuda Katz
- Jake Archibald: In The Loop
(JSConf.Asia 2018, YouTube, 35 min.) - JS event loop, tasks, microtasks, promises,
setTimeout,requestAnimationFrame, event listeners - HTML DOM — Phuoc Nguyen has a lot of examples how to do various DOM tasks with plain web APIs in JavaScript
- Jest docs: expect
- Jest cheat sheet
- But really, what is a JavaScript mock? by Kent C. Dodds - nice article how you would implement a JS mock yourself, and how to use Jest's module mocking
Helpful for debugging, e.g. to quickly simulate a slow backend.
constsleep=ms=>newPromise(resolve=>setTimeout(resolve,ms));console.log('sleeping...');awaitsleep(3400);console.log('wake up!');