Javascript

Question 1

Inside which HTML element do we put the JavaScript?

Answer 1

script

Question 2

What is the correct JavaScript syntax to write “Hello World”?

Answer 2

document.write(“Hello World”)

Question 3

Where is the correct place to insert a JavaScript?

Answer 3

Both the head section and the section are correct

Question 4

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

Answer 4

script type=”text/javascript” src=”xxx.js”

Question 5

The external JavaScript file must contain the script tag

Answer 5

False

Question 6

How do you write “Hello World” in an alert box?

Answer 6

alert(“Hello World”)

Question 7

How do you create a function?

Answer 7

function myFunction()

Question 8

How do you call a function named “myFunction”?

Answer 8

myFunction()

Question 9

How do you write a conditional statement for executing some code if “i” is equal to 5?

Answer 9

if (i==5)

Question 10

How do you write a conditional statement for executing some code if “i” is NOT equal to 5?

Answer 10

if (i != 5)

Question 11

How does a “while” loop start?

Answer 11

while (i<=10)

Question 12

How does a “for” loop start?

Answer 12

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

Question 13

How can you add a comment in a JavaScript?

Answer 13

//This is a comment

Question 14

What is the correct JavaScript syntax to insert a comment that has more than one line?

Answer 14

/*This comment has
more than one line*/

Question 15

What is the correct way to write a JavaScript array?

Answer 15

var txt = new Array(“tim”,”kim”,”jim”)

Question 16

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

Answer 16

Math.round(7.25)

Question 17

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

Answer 17

Math.max(x,y)

Question 18

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

Answer 18

w2=window.open(“http://www.w3schools.com”);

Question 19

How do you put a message in the browser’s status bar?

Answer 19

window.status = “put your message here”

Question 20

How can you find a client’s browser name?

Answer 20

navigator.appName