Promises - JavaScript

what is promises in Javascript? JavaScript is synchronous by default, which means code executes in a linear, line-by-line manner. Each statement waits for the previous statement to finish before executing. However, some operations like: API calls Database queries File reading Timers (setTimeout) take time to complete. If JavaScript waited for these operations synchronously, the entire program would pause and become slow or unresponsive. To avoid blocking execution, JavaScript supports asynchrono