Which feature introduced in ES6 makes handling asynchronous operations more straightforward?*CallbacksPromisesAsync/awaitObservables

Step 1: Identify the Features

The options given are:

1. Callbacks
2. Promises
3. Async/await
4. Observables

Step 2: Analyze Each Feature

1. Callbacks: Callbacks are functions that are executed after another function completes. While useful, they can lead to "callback hell," making code harder to read and maintain.

2. Promises: Promises represent a value that may be available now or in the future. They allow for better handling of asynchronous operations compared to callbacks by providing methods like .then() and .catch().

3. Async/await: This feature simplifies working with Promises. With async functions, you can write asynchronous code that looks synchronous. The await operator makes JavaScript wait until the Promise resolves, making it easier to read and manage.

4. Observables: Primarily used in reactive programming (RxJS), observables provide a way to work with streams of data, but they are not part of ES6.

Step 3: Determine the Best Option

Among the options provided, async/await is the feature that makes handling asynchronous operations most straightforward in ES6. It improves readability and maintainability of code.

Final Answer

Async/await is the feature introduced in ES6 that makes handling asynchronous operations more straightforward.