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1. developer.mozilla.org › Promise › PromisePromise() constructor - JavaScript | MDN - MDN Web Docs

   developer.mozilla.org › Promise › Promise

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   Oct 4, 2024 · The Promise() constructor creates Promise objects. It is primarily used to wrap callback-based APIs that do not already support promises.

2. www.geeksforgeeks.org › javascript-promise-constructorJavaScript Promise constructor - GeeksforGeeks

   www.geeksforgeeks.org › javascript-promise-constructor

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   Aug 8, 2023 · JavaScript Promise constructor property is used to return the Promise constructor function for the object. The function which is returned by this property is just a reference to this function, not a Promise containing the function's name.

3. developer.mozilla.org › Global_Objects › PromisePromise - JavaScript | MDN - MDN Web Docs

   developer.mozilla.org › Global_Objects › Promise

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   Oct 7, 2024 · The Promise() constructor is used to create the promise. The fulfillment of the promise is logged, via a fulfill callback set using p1.then() . A few logs show how the synchronous part of the method is decoupled from the asynchronous completion of the promise.

4. www.dapelican.dev › js-promise-constructorJavaScript: the Promise() constructor - Dapelican

   www.dapelican.dev › js-promise-constructor

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   JavaScript: the Promise () constructor clearly explained. What is a promise? (Reminder) A promise object represents the eventual completion (or failure) of an asynchronous operation and its resulting value. A promise can have 3 different states: pending: initial state, neither fulfilled nor rejected .

5. stackoverflow.com › questions › 42118900When is the body of a Promise constructor callback executed?

   stackoverflow.com › questions › 42118900

   Yes, when you construct a Promise the first parameter gets executed immediately. In general, you wouldn't really use a promise in the way you did, as with your current implementation, it would still be synchronous. You would rather implement it with a timeout, or call the resolve function as part of an ajax callback.

6. www.freecodecamp.org › news › guide-to-javascriptHow Promises Work in JavaScript – A Comprehensive Beginner's ...

   www.freecodecamp.org › news › guide-to-javascript

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   Jun 13, 2023 · To create a promise, you need to create an instance object using the Promise constructor function. The Promise constructor function takes in one parameter. That parameter is a function that defines when to resolve the new promise, and optionally when to reject it.

7. People also ask

   What is a promise constructor function?

   • The Promise constructor function takes in one parameter. That parameter is a function that defines when to resolve the new promise, and optionally when to reject it. For example, assume you want a promise to resolve after a timeout of two seconds. You can achieve this by writing it into the parameter of the constructor function.

   How Promises Work in JavaScript – A Comprehensive Beginner's Guide

   www.freecodecamp.org/news/guide-to-javascript-promises/

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   How do I create a promise in JavaScript?

   • To create a promise, you need to create an instance object using the Promise constructor function. The Promise constructor function takes in one parameter. That parameter is a function that defines when to resolve the new promise, and optionally when to reject it. For example, assume you want a promise to resolve after a timeout of two seconds.

   How Promises Work in JavaScript – A Comprehensive Beginner's Guide

   www.freecodecamp.org/news/guide-to-javascript-promises/

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   What is a promise() function?

   • Note: Promise() can only be constructed with new. Attempting to call it without new throws a TypeError. A function to be executed by the constructor. It receives two functions as parameters: resolveFunc and rejectFunc.

   Promise() constructor - JavaScript | MDN - MDN Web Docs

   developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/Promise

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   How does a promise executor function work?

   • The executor function is executed immediately by the Promise implementation, passing resolve and reject functions (the executor is called before the Promise constructor even returns the created object) console.log("This line will be printed as soon as we declare the promise");

   When is the body of a Promise constructor callback executed?

   stackoverflow.com/questions/42118900/when-is-the-body-of-a-promise-constructor-callback-executed

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   Can a promise function be executed immediately?

   • Immediately, yes, by specification. The executor function is executed immediately by the Promise implementation, passing resolve and reject functions (the executor is called before the Promise constructor even returns the created object)

   When is the body of a Promise constructor callback executed?

   stackoverflow.com/questions/42118900/when-is-the-body-of-a-promise-constructor-callback-executed

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   What is a return value in a promise constructor?

   • Return Value: Another promise object, in which case the promise gets dynamically inserted into the chain. Example 1: Creating only one promise constructor. Example 2: In this code, we are going to create two promise constructors. Example 3: In this example, we will display a value.

   JavaScript Promise constructor - GeeksforGeeks

   www.geeksforgeeks.org/javascript-promise-constructor/

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8. developer.mozilla.org › Guide › Using_promisesUsing promises - JavaScript | MDN - MDN Web Docs

   developer.mozilla.org › Guide › Using_promises

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   Oct 7, 2024 · The promise constructor takes an executor function that lets us resolve or reject a promise manually. Since setTimeout() doesn't really fail, we left out reject in this case. For more information on how the executor function works, see the Promise() reference.