JavaScript

1. What are Promise APIs? Promise APIs are built-in JavaScript methods for handling multiple promises simultaneously, allowing for efficient management of asynchronous operations. These APIs provide a way to aggregate and manipulate promises, helping developers coordinate multiple asynchronous tasks with ease. 2. Promise.all() Promise.all() takes an iterable (usually an array) of promises and returns a single promise that resolves when all the promises in the iterable have resolved or rejects if any promise in the iterable rejects....

1. This in Global Space In the global context, this refers to the global object. Browser: window Node.js: global console.log(this); // In a browser, logs the Window object 2. This Inside a Function In a regular function, this refers to the global object when called globally. When called as a method of an object, this refers to that object. function regularFunction() { console.log(this); // Logs global object } regularFunction(); const obj = { method: function () { console....