document.querySelectorAll() vs element.addEventListener()
document.querySelectorAll() and element.addEventListener() are both JavaScript DOM APIs, and choosing between them is a common point of confusion. This page compares their syntax, parameters, return values, and typical use cases so you can pick the right one. document.querySelectorAll(): Returns all matching elements as a NodeList. Its syntax is document.querySelectorAll(selectors). element.addEventListener(): Attaches an event handler. Its syntax is element.addEventListener(type, listener, options). Example of document.querySelectorAll(): document.querySelectorAll("div"). Example of element.addEventListener(): button.addEventListener("click", () => alert("Clicked!")). Read the full references for document.querySelectorAll() and element.addEventListener() to see edge cases, time complexity, browser support, and the mistakes developers most often make with each. Other DOM APIs worth comparing: document.getElementById(), document.querySelector(), element.removeEventListener(), document.createElement(), element.appendChild(), element.removeChild(). Both belong to the DOM category in the JS Reference documentation, which covers 494 entries in total. Try both in the JavaScript playground to see the behavioral difference live.