Grade 12- Knowledge Booster- JavaScript Events

What is a JavaScript event?

• a) A special type of function
  

• b) An action that can be detected by JavaScript
  

• c) A reserved keyword in JavaScript
  

• d) A method for declaring variables
  

Which event occurs when a user clicks on an HTML element?

• onmouseover

• onclick

• onchange

• onload

3. Which event is triggered when the webpage is fully loaded?

• onchange

• onload

• onclick

• onsubmit

What is the purpose of the onmouseover event in JavaScript?

• a) To trigger when a user clicks on an element
  

• b) To trigger when the user presses a key
  

• c) To trigger when the mouse pointer moves over an element
  

• d) To trigger when the webpage is refreshed
  

Which event is fired when a user changes the value of an input field in a form?

• a) onchange
  

• b) onclick
  

• c) onload
  

• d) onblur
  

6. Which event is used to detect when a form is submitted?

• a) oninput
  

• b) onfocus
  

• c) onsubmit
  

• d) onreset
  

What is the difference between the onfocus and onblur events in JavaScript?

• a) onfocus occurs when an element loses focus, onblur occurs when it gains focus
  

• b) onfocus occurs when an element gains focus, onblur occurs when it loses focus
  

• c) Both are the same
  

• d) Neither of these exist in JavaScript
  

Which event can be used to capture when a user resizes the browser window?

• a) onresize
  

• b) onload
  

• c) onchange
  

• d) onfocus
  

Which of the following is NOT a valid JavaScript event?

• a) onkeypress
  

• b) onchange
  

• c) onkeypressdown
  

• d) onmouseover
  

Which event occurs when the page is about to be unloaded from the browser?

• a) onunload
  

• b) onload
  

• c) onresize
  

• d) onscroll