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  • Javascript Quiz

    • Javascript Quiz

    The test contains 20 questions and it's not official, it's just a nice way to see how much you know, or don't know, about Javascript.

    1.

    How to write an IF statement for executing some code if "i" is NOT equal to 5?

    if (i <> 5)
    if i <> 5
    if (i != 5)
    if i =! 5 then

    2.

    How do you call a function named "myFunction"?

    myFunction()
    call myFunction()
    call function myFunction()
    myFunction

    3.

    Where is the correct place to insert a JavaScript?

    Before <html>
    Both the <head> section and the <body> section are correct
    The <head> section
    The <body> section

    4.

    What is the correct JavaScript syntax to change the content of this html element <p id="demo">This is a demonstration.</p>

    #demo.innerHTML = "Hello World!";
    document.getElementById("demo").innerHTML = "Hello World!";
    document.getElementByName("p").innerHTML = "Hello World!";
    document.getElement("p").innerHTML = "Hello World!";

    5.

    How can you detect the client's browser name?

    navigator.appName
    client.navName
    browser.name
    navigator.browsername

    6.

    How do you write "Hello World" in an alert box?

    alertBox("Hello World");
    alert("Hello World");
    msgBox("Hello World");
    msg("Hello World");

    7.

    How to write an IF statement in JavaScript?

    if i = 5
    if i == 5 then
    if (i == 5)
    if i = 5 then

    8.

    How can you add a comment in a JavaScript?

    'This is a comment
    <!--This is a comment-->
    //This is a comment
    // This is a comment-->

    9.

    How do you create a function in JavaScript?

    function myFunction()
    function ()
    function = myFunction()
    function:myFunction()

    10.

    How does a WHILE loop start?

    while (i is 10)
    while (i <= 10; i++)
    while i = 1 to 10
    while (i <= 10)

    11.

    Inside which HTML element do we put the JavaScript?

    <script>
    <scripting>
    <js>
    <javascript>

    12.

    How do you round the number 7.25, to the nearest integer?

    round(7.25)
    Math.round(7.25)
    rnd(7.25)
    Math.rnd(7.25)

    13.

    What is the correct JavaScript syntax for opening a new window called "w2" ?

    w2 = window.open("http://www.w3schools.com");
    w2 = window.new("http://www.w3schools.com");
    w2 = open("http://www.w3schools.com");
    w2 = window("http://www.w3schools.com");

    14.

    How do you find the number with the highest value of x and y?

    ceil(x, y)
    Math.max(x, y)
    top(x, y)
    Math.ceil(x, y)

    15.

    What is the correct way to write a JavaScript array?

    var colors = 1 = ("red"), 2 = ("green"), 3 = ("blue")
    var colors = "red", "green", "blue"
    var colors = ["red", "green", "blue"]
    var colors = (1:"red", 2:"green", 3:"blue")

    16.

    The external JavaScript file must contain the <script> tag.

    Neither True nor False
    True
    Sometimes
    False

    17.

    How does a FOR loop start?

    for (i = 0; i <= 5)
    for i = 1 to 5
    for (i <= 5; i++)
    for (i = 0; i <= 5; i++)

    18.

    What is the correct syntax for referring to an external script called "xxx.js"?

    <script href="xxx.js">
    <script name="xxx.js">
    <script src="xxx.js">
    <script link="xxx.js">

     
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