Understanding Promise.any()

To get a clear grasp of Promise.any(), let’s start with a straightforward analogy. Imagine you promised a friend to assist them with their homework. This promise can either be fulfilled or broken.

1. Promise Outcomes:

   • Fulfilled: You successfully assist your friend, signifying that the promise is resolved.
   • Broken: You are unable to help due to unforeseen circumstances, indicating a rejection of the promise.

2. Multiple Promises Scenario:

   When multiple friends request your help simultaneously, you can only attend to one at a time. This is where Promise.any() becomes useful.

Here’s how it functions:

// Creating several promises for different homework tasks

const homeworkTask1 = new Promise((resolve) => {

setTimeout(() => {

resolve("Task 1 completed successfully.");

}, 2000); // Completes after 2 seconds

});

const homeworkTask2 = new Promise((resolve) => {

setTimeout(() => {

resolve("Task 2 completed successfully.");

}, 3000); // Completes after 3 seconds

});

const homeworkTask3 = new Promise((_, reject) => {

setTimeout(() => {

reject("Task 3 failed to complete.");

}, 1500); // Fails after 1.5 seconds

});

const homeworkPromises = [homeworkTask1, homeworkTask2, homeworkTask3];

The Promise.any() function will resolve if at least one of these tasks is completed successfully, as shown below:

Promise.any(homeworkPromises)

.then((result) => {

console.log("One of the tasks completed successfully:", result);

})

.catch((error) => {

console.error("All tasks failed:", error);

});