Lecture 13 Quiz: JavaScript Functions & Event Handling

Note

Review before quiz: Lectures | Week 4 Content | Lab 4 | Assignment 2

Lecture 13 Self-Check

Question 1: What is a primary purpose of JavaScript functions?

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A. To style HTML

B. To repeat reusable logic

C. To create tables

D. To store images

Question 2: Which method is commonly used to attach event handlers to DOM elements?

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A. listenEvent()

B. onEvent()

C. addEventListener()

D. attachHandler()

Question 3: What does event.preventDefault() do?

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A. It refreshes the page

B. It stops default browser behavior

C. It creates a new event

D. It changes CSS automatically

Question 4: Which event object property usually refers to the element that triggered the event?

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A. target

B. type

C. timestamp

D. value

Question 5: Which option is valid JavaScript function syntax?

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A. function add(a,b){ return a+b; }

B. const add = a,b => a+b;

C. add(a,b) => a+b;

D. const add => (a,b)=a+b;