What is the difference between Promise.all and Promise.race in JavaScript?
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What is the difference between Promise.all and Promise.race in JavaScript?
Promise.all waits for all promises to resolve, while Promise.race resolves as soon as the first promise resolves or rejects.
Can you give me an example of each?
Sure! For Promise.all, if you have Promise.all([p1, p2]), it resolves when both p1 and p2 are resolved. For Promise.race, Promise.race([p1, p2]) resolves as soon as either p1 or p2 resolves.
What happens if one of the promises in Promise.all rejects?
If any promise in Promise.all rejects, the entire operation rejects immediately with that error.
And what about Promise.race? What if the first promise rejects?
If the first promise in Promise.race rejects, it resolves with that rejection, and the other promises are still running.
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