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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.

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

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

    2.

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

    True
    Neither True nor False
    False
    Sometimes

    3.

    Inside which HTML element do we put the JavaScript?

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

    4.

    Where is the correct place to insert a JavaScript?

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

    5.

    How does a FOR loop start?

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

    6.

    What is the correct way to write a JavaScript array?

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

    7.

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

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

    8.

    How to write an IF statement in JavaScript?

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

    9.

    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-->

    10.

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

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

    11.

    How can you detect the client's browser name?

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

    12.

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

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

    13.

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

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

    14.

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

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

    15.

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

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

    16.

    How do you create a function in JavaScript?

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

    17.

    How does a WHILE loop start?

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

    18.

    How do you call a function named "myFunction"?

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

     
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