Copmuter 9th Chap 3 : Topic 3.3 - Maryam Publications

Computer Chapter 3 : Topic 3.3

JavaScript & HTML

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A student wants a button click to change the heading text displayed on a webpage without reloading the page. Which aspect of HTML can JavaScript modify?

A) Text content of an element

B) Internet connection speed

C) Computer hardware settings

D) Browser installation files

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A web developer uses JavaScript to replace an image with another image when a user moves the mouse over it. Which HTML aspect is being modified?

A) Network protocol

B) Keyboard layout

C) CPU performance

D) Image source attribute

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A webpage hides a paragraph when a user clicks a button and shows it again when clicked a second time. Which HTML aspect is being changed?

A) Screen resolution

B) Browser version

C) Storage capacity

D) Element visibility

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A student creates a script that changes the background color of a webpage based on user selection. What is JavaScript modifying?

A) File compression

B) Processor speed

C) CSS style properties of HTML elements

D) Operating system settings

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A form displays an error message when a required field is left empty. Which HTML aspect is JavaScript most likely changing?

A) Printer configuration

B) Element content

C) Hard disk partition

D) System clock

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A website allows users to enlarge or reduce text size using buttons. Which aspect of HTML is being modified?

A) Monitor brightness

B) Browser cache

C) Font-related style properties

D) Internet bandwidth

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A programmer adds a new list item to an existing HTML list when a user submits data. What capability of JavaScript is being demonstrated?

A) Installing software automatically

B) Changing operating systems

C) Creating new HTML elements dynamically

D) Modifying hardware settings

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A button changes its label from "Login" to "Logout" after successful authentication. Which aspect of HTML is changed?

A) Processor architecture

B) Database structure

C) Button text content

D) IP address

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A student uses JavaScript to disable a submit button until all required fields are completed. Which HTML aspect is modified?

A) Network cable length

B) Element attribute

C) Monitor resolution

D) Storage device type

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A webpage displays additional information only after a user clicks "Read More." Which HTML feature is JavaScript primarily controlling?

A) Power supply settings

B) Element visibility and content display

C) Keyboard response rate

D) Processor temperature

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A developer changes the hyperlink destination of a button based on user selection. Which HTML aspect is being modified?

A) Internet modem settings

B) Browser history

C) Screen resolution

D) Link attribute (href)

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A shopping website updates the number of items displayed in the cart immediately after a product is added. Which aspect of HTML is most likely changed?

A) Dynamic text content

B) Processor cache

C) Operating system files

D) System memory size

13 / 13

A programmer uses JavaScript to add a new paragraph to a webpage after a user presses a button. What does this demonstrate?

A) JavaScript can only read HTML elements.

B) JavaScript can replace the operating system.

C) JavaScript can modify computer hardware.

D) JavaScript can create and modify HTML structure dynamically.

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