In JavaScript, how are promises used?

Question

Options

• ATo iterate over arrays.
• BTo handle potential future results of an operation.
• CTo style HTML elements.
• DTo create new HTML elements.

• A
  3% (1)
• B
  94% (31)
• C
  3% (1)

Explanation

Promises in JavaScript represent the eventual completion (or failure) of an asynchronous operation, making B correct - they let you handle results that aren't available yet, such as a network request or a timer. Options A, C, and D describe unrelated JavaScript/web concepts: array iteration uses methods like forEach or for...of, styling elements is done via CSS or the style property, and creating DOM elements uses document.createElement().

Memory tip: Think of a promise like ordering food at a restaurant - you receive a "promise" (the ticket) now, and you handle the result later when the food either arrives (.then()) or the kitchen fails (.catch()).

No community discussion yet for this question.