DOM & Events

Preview — 3 of 10 questions

Which method is used to select an element by its ID in JavaScript?

javascript

const heading = document.getElementById("main-heading");
console.log(heading.textContent); // Access the element

Adocument.getElementById("id")

Bdocument.querySelector("#id")

Cdocument.querySelector(".id")

Ddocument.getElementByClass("id")

How do you change the text content of an HTML element with JavaScript?

javascript

element.textContent = "Hello <b>World</b>";
// Renders as: "Hello <b>World</b>" (literal text)

AAll of the above

Belement.textContent = "New text";

Celement.innerText = "New text";

Delement.innerHTML = "New text";

What is the correct way to add a new class to an element?

javascript

const button = document.querySelector("button");
button.classList.add("active");
// If button already had classes, they're preserved

Aelement.className = "new-class";

Belement.addClass("new-class");

Celement.class = "new-class";

Delement.classList.add("new-class");

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