HTML tags, JavaScript Functions

Question 1

displays the alert box containing message with ok button

Answer 1

alert()

Question 2

displays the confirm dialog box containing message with ok and cancel button

Answer 2

confirm()

Question 3

displays a dialog box to get input from the user.

Answer 3

prompt()

Question 4

opens the window.

Answer 4

open()

Question 5

closes the window.

Answer 5

close()

Question 6

performs action after specified time like calling function, evaluating expressions etc

Answer 6

setTimeout()

Question 7

JavaScript BOM (Browser Object Model)

Answer 7

1. alert()
2. confirm()
3. prompt()
4. open()
5. close()
6. setTimeout()

Question 8

The ____ object represents the whole html document

Answer 8

Document

Question 9

writes the given string on the document.

Answer 9

write(“string”)

Question 10

writes the given string on the document with newline character at the end.

Answer 10

writeIn(“string”)

Question 11

returns the element having the given id value.

Answer 11

getElementById()
WALANG “S” SA ELEMENT DITO HA!!!

Question 12

returns all the elements having the given name value.

Answer 12

getElementsByName()

Question 13

returns all the elements having the given tag name.

Answer 13

getElementsByTagName()

Question 14

returns all the elements having the given class name.

Answer 14

getElementsByClassName()

Question 15

The Access the target element(s) using methods:

Answer 15

1. getElementById()
2. getElementsByName()
3. getElementsByClassName()
4. getElementsByTagName()

Question 16

Displays an alert dialog box with a message

Answer 16

alert()

Question 17

Displays a dialog box to prompt the user for input.

Answer 17

prompt()

Question 18

Displays a dialog box with a message and OK/Cancel buttons.

Answer 18

confirm()

Question 19

Converts a string to an integer.

Answer 19

parseInt()

Question 20

Converts a string to a floating-point number.

Answer 20

parseFloat()

Question 21

Converts a value to a string

Answer 21

String()

Question 22

Converts a value to a number.

Answer 22

Number()

Question 23

Checks if a value is NaN (Not-a-Number).

Answer 23

isNaN()

Question 24

Generates a random number between 0 and 1.

Answer 24

Math.random()

Question 25

Rounds a number down to the nearest integer

Answer 25

Math.floor()

Question 26

Rounds a number up to the nearest integer.

Answer 26

Math.ceil()

Question 27

syntax changes the text content of the specified element to the provided value.

Answer 27

textContent
element.textContent = ‘New text content’;

Question 28

syntax changes the HTML content of the specified element. It can include tags and will be rendered as HTML.

Answer 28

innerHTML
element.innerHTML = ‘< strong >New HTML content
< /strong >’;

Question 29

method searches a string for matches against a regex pattern and replaces them with a specified replacement string

Answer 29

replace()

Question 30

method checks whether a given string matches a specified regex pattern. It returns a boolean value indicating whether the pattern is found or not.

Answer 30

test()

Question 31

method searches a string for matches against a regex pattern and returns an array of the matched results.

Answer 31

match()

Question 32

method splits a string into an array of substrings based on a specified regex pattern.

Answer 32

split()

Question 33

method searches a string for a specified regex pattern and returns the index of the first match found. If no match is found, it returns -1.

Answer 33

search()

Question 34

JavaScript built-in methods for Regular Expression:

Answer 34

• test()
• match()
• replace()
• split()
• search()