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@ -10,11 +10,11 @@
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A Promise can be in one of these three states:
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A Promise can be in one of these three states:
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- Pending (the operation is being processed)
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- Pending (the operation is being processed)
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- Fullfilled (the operation has completed successfully)
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- Fullfilled (the operation has completed successfully, resolve has been called)
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- Rejected
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- Rejected (the operation has not completed successfully, reject has been called)
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*/
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*/
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const promise = new Promise(function (resolve, reject) {
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const promise = new Promise(function (resolve, reject) {
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setTimeout(() => resolve('done'), 500);
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setTimeout(() => resolve('done'), 5000);
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});
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});
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/*
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/*
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@ -50,3 +50,9 @@ const promise = new Promise(function (resolve, reject) {
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promise.finally(
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promise.finally(
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() => console.log('The execution has terminated. Bye')
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() => console.log('The execution has terminated. Bye')
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);
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);
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/*
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This line is used to demonstrate that the code within "then, catch, etc."
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is in the event loop, as this is the first line getting executed.
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*/
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console.log("Last line");
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@ -1,3 +1,4 @@
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JavaScript is single-threaded (but note that NodeJS is not entirely single-threaded, as it internally mantains a thread pool), but it can still take advantage of asynchronous programming.
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JavaScript is single-threaded (but note that NodeJS is not entirely single-threaded, as it internally mantains a thread
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pool), but it can still take advantage of asynchronous programming.
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The Event Loop, which is a JavaScript construct that completes a new task while waiting for another
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The Event Loop, which is a JavaScript construct that completes a new task while waiting for another.
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