w3schools JavaScript quiz1
addition operator
+
8. How to insert a comment that has more than one line? /*This comment has more than one line*/ //This comment has more than one line// <!--This comment has more than one line-->
/*This comment has more than one line*/
7. 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
How can we separate JavaScript Statement's
;
1. Inside which HTML element do we put the JavaScript? <scripting> <script> <js> <javascript>
<script>
Assignment Operator
=
4. How do you write "Hello World" in an alert box? alertBox("Hello World"); alert("Hello World"); msgBox("Hello World"); msg("Hello World");
alert("Hello World");
2. What is the correct JavaScript syntax to change the content of the HTML element below? <p id="demo">This is a demonstration.</p> document.getElement("p").innerHTML = "Hello World!"; #demo.innerHTML = "Hello World!"; document.getElementByName("p").innerHTML = "Hello World!"; document.getElementById("demo").innerHTML = "Hello World!";
document.getElementById("demo").innerHTML = "Hello World!";
5. How do you create a function in JavaScript? function = myFunction() function myFunction() function:myFunction()
function myFunction()
6. How do you call a function named "myFunction"? myFunction() call function myFunction() call myFunction()
myFunction()
11. Which operator is used to assign a value to a variable? x = - *
=
3. Where is the correct place to insert a JavaScript? The <body> section Both the <head> section and the <body> section are correct The <head> section
Both the <head> section and the <body> section are correct
13. Is JavaScript case-sensitive? No Yes
Yes
12. What will the following code return: Boolean(10 > 9) true false NaN
true
10. How do you declare a JavaScript variable? var carName; v carName; variable carName;
var carName;
9. 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")
var colors = ["red", "green", "blue"]