ProTechSolution - E-Learning System

1. How can you add a comment in a JavaScript?

'This is a comment

//This is a comment

**This is a comment**

2. How does a FOR loop start?

for (i <= 5; i++)

for (i = 0; i <= 5)

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

for i = 1 to 5

3. Where is the correct place to insert a JavaScript?

The <body> section

The <head> section

Both the <head> section and the <body> section are correct

Outside the <html> tag

4. What will the following code return: Boolean(10 > 9)

true

false

NaN

undefined

5. How do you declare a JavaScript variable?

v carName;

variable carName;

var carName;

declare carName;

6. How does a WHILE loop start?

while (i <= 10; i++)

while i = 1 to 10

while (i <= 10)

while (i++)

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

True

False

Only in old browsers

Sometimes

8. Inside which HTML element do we put the JavaScript?

<js>

9. Which event occurs when the user clicks on an HTML element?

onmouseclick

onchange

onclick

onmouseover

10. How to write an IF statement in JavaScript?

if i = 5 then

if (i == 5)

if i == 5 then

if i = 5

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

top(x, y)

Math.max(x, y)

Math.ceil(x, y)

ceil(x, y)

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

if (i != 5)

if i =! 5 then

if (i <> 5)

if i <> 5

13. Which operator is used to assign a value to a variable?

-

*

x

=

14. How can you detect the client's browser name?

navigator.appName

browser.name

client.navName

window.browser

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

16. JavaScript is the same as Java.

True

False

Mostly True

Only in Netscape

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

Math.rnd(7.25)

Math.round(7.25)

round(7.25)

rnd(7.25)

18. 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 = (1:'red', 2:'green', 3:'blue')

var colors = 'red', 'green', 'blue'

19. How do you call a function named 'myFunction'?

call function myFunction()

myFunction()

call myFunction()

execute myFunction()

20. How do you write 'Hello World' in an alert box?

alertBox('Hello World');

msg('Hello World');

alert('Hello World');

msgBox('Hello World');

JavaScript Certification Quiz