The Promise.reject() static method returns a Promise object that is rejected with a given reason.
La fonction statique Promise.reject renvoie une Promise qui est rejetée. Pour faciliter le débogage (comprendre plus rapidement le problème et sélectionner une erreur précise), il peut être utile que l'argument raison soit une instance d'Error.
https://ourcodeworld.com › articles › read › 317 › how-to-check-if-a-javascript-promise-has...
How to check if a Javascript promise has been fulfilled, rejected or ...Rejected means that the promise has been rejected and now has its rejected reason (using the internal reject function). The operation represented by the promise failed to obtain a value and thus has a reason for failing to do so (typically an error code or error object, but it can be anything).
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https://www.freecodecamp.org › news › javascript-promise-tutorial-how-to-resolve-or-reject...
JavaScript Promise Tutorial – How to Resolve or Reject Promises in JSHow promises are resolved and rejected. Here is an example of a promise that will be resolved (fulfilled state) with the value I am done immediately. let promise = new Promise (function (resolve, reject) { resolve("I am done"); }); The promise below will be rejected (rejected state) with the error message Something is not right!.
https://www.w3schools.com › jsref › jsref_promise_reject.asp
JavaScript Promise.reject() Method - W3SchoolsDescription. The Promise.reject() method returns a Promise object rejected with a value. Syntax. Promise.reject (message) Parameters. Return Value. Promise Tutorial. catch () finally () then () Browser Support. Promise.Reject() is an ECMAScript6 (ES6) feature. ES6 (JavaScript 2015) is supported in all modern browsers since June 2017:
https://javascript.info › promise-error-handling
Error handling with promises - The Modern JavaScript TutorialIf we throw inside a .then handler, that means a rejected promise, so the control jumps to the nearest error handler. Here’s an example: new Promise((resolve, reject) => { resolve("ok"); }).then((result) => { throw new Error("Whoops!"); // rejects the promise }).catch(alert); // Error: Whoops!
The then() method takes up to two arguments; the first argument is a callback function for the fulfilled case of the promise, and the second argument is a callback function for the rejected case. The catch() and finally() methods call then() internally and make error handling less verbose.
https://www.freecodecamp.org › news › javascript-es6-promises-for-beginners-resolve-reject...
JavaScript Promise Tutorial: Resolve, Reject, and Chaining in JS and ES6When we define a promise in JavaScript, it will be resolved when the time comes, or it will get rejected. Promises in JavaScript. First of all, a Promise is an object. There are 3 states of the Promise object: Pending: Initial State, before the Promise succeeds or fails. Resolved: Completed Promise. Rejected: Failed Promise.
https://masteringjs.io › tutorials › fundamentals › promise-reject
Reject a Promise in JavaScript - Mastering JSThe Promise.reject() function is the most concise way to create a rejected promise that contains a given error. You should then use .catch() to handle the error. const p = Promise .reject( new Error ( 'Oops!' )); return p.catch( err => { err.message; // 'Oops!'
The Promise.reject(reason) method returns a Promise object that is rejected with the given reason. Syntax. Promise.reject(reason); Parameters. reason. Reason why this Promise rejected. Return value. A Promise that is rejected with the given reason. Description. The static Promise.reject function returns a Promise that is rejected.
