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JavaScript DOM and BOM
Question 1
Which method is used to select an element by its ID?
- A
getElementByClass()
- B
getElementById()
- C
querySelectorAll()
- D
getById()
Question 2
What does document.querySelectorAll() return?
- A
An array of elements
- B
A single element
- C
A NodeList
- D
Undefined
Question 3
How do you change the inner text of an element in the DOM?
- A
element.innerText = "New Text";
- B
element.textContent = "New Text";
- C
element.innerHTML = "New Text";
- D
All of the above
Question 4
What does window.location.href return?
- A
The browser's name
- B
The URL of the current page
- C
The history of visited pages
- D
The cookies of the website
Question 5
What is the purpose of window.history.back()?
- A
To navigate to the next page in history
- B
To reload the current page
- C
To navigate to the previous page in history
- D
To clear the browser's history
Question 6
Which method is used to set a cookie?
- A
document.cookie = "key=value";
- B
window.setCookie()
- C
navigator.cookie()
- D
cookie.set()
Question 7
What will the following code output?
console.log(window.navigator.userAgent);
- A
Browser and device information
- B
URL of the current page
- C
Cookies of the website
- D
Undefined
Question 8
Which event is triggered when the DOM is fully loaded?
- A
onload
- B
DOMContentLoaded
- C
load
- D
domComplete
Question 9
How do you remove an element from the DOM?
- A
element.remove();
- B
element.delete();
- C
element.destroy();
- D
element.clear();
Question 10
What does window.alert() do?
- A
Logs a message to the console
- B
Shows a confirmation box
- C
Displays an alert box with a message
- D
Refreshes the browser
There are 10 questions to complete.
