Quizalize logo
placeholder image to represent content

Javascript

Quiz by Hardik Vedikin

Feel free to use or edit a copy

includes Teacher and Student dashboards

Measure skills
from any curriculum

Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.

With a free account, teachers can
  • edit the questions
  • save a copy for later
  • start a class game
  • automatically assign follow-up activities based on students’ scores
  • assign as homework
  • share a link with colleagues
  • print as a bubble sheet

Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

New Quizalize solo game modes
48 questions
Show answers
  • Q1
    Which keyword is used to declare a variable in JavaScript?
    function
    var
    const
    let
    30s
  • Q2
    What is the purpose of the 'typeof' operator in JavaScript?
    To loop through an array
    To validate user input
    To determine the type of a variable
    To convert a variable to a string
    30s
  • Q3
    What is the syntax for creating a function in JavaScript?
    function {} functionName()
    functionName => {}
    function functionName() {}
    function = functionName() {}
    30s
  • Q4
    What is the purpose of the 'querySelector()' method in JavaScript?
    To add a new HTML element
    To validate a form input
    To select and return the first element that matches a specified CSS selector
    To define a new CSS style
    30s
  • Q5
    How do you add a comment in JavaScript?
    // This is a comment
    /* This is a comment */
    ' This is a comment
    30s
  • Q6
    What is the purpose of the 'addEventListener()' method in JavaScript?
    To create a new HTML element
    To attach an event handler function to an element
    To add a CSS class to an element
    To fetch data from an API
    30s
  • Q7
    What is the result of the following code snippet? var x = 10; var y = '5'; var result = x + y;
    1050
    15
    105
    NaN
    30s
  • Q8
    What does the 'NaN' acronym stand for in JavaScript?
    No Available Number
    Not a Number
    Null and None
    Notable Array Name
    30s
  • Q9
    What is the purpose of the 'push()' method in JavaScript?
    To check if an element exists in an array
    To remove the last element from an array
    To sort the elements of an array alphabetically
    To add one or more elements to the end of an array and return the new length
    30s
  • Q10
    What is the purpose of the 'slice()' method in JavaScript?
    To check if a value exists in an array
    To convert an array to a string
    To reverse the order of elements in an array
    To extract a section of an array and return a new array
    30s
  • Q11
    Which keyword is used to declare a function in JavaScript?
    var
    let
    class
    function
    30s
  • Q12
    Which method is used to add an element to the end of an array in JavaScript?
    pop
    shift
    unshift
    push
    30s
  • Q13
    Which operator is used for strict equality comparison in JavaScript?
    ==
    =
    !==
    ===
    30s
  • Q14
    Which method is used to remove the last element from an array in JavaScript?
    unshift
    push
    pop
    shift
    30s
  • Q15
    Which global function is used to convert a string to an integer in JavaScript?
    toFixed
    toString
    parseFloat
    parseInt
    30s

Teachers give this quiz to your class