Computer Programming 10 Quiz

Which HTML element is used to create buttons for calculator operations (e.g., "+", "-", "=")?

What attribute in the tag defines the type of data it will accept?

• type

• class

• id

• name

Which technologies are required to build a functional HTML calculator?

• HTML for structure

• CSS for styling

• JavaScript for functionality

• All of the above

Which JavaScript function can you use to retrieve the value of an input field in a calculator?

• document.getElementById("id").value

• console.log("value")

• document.querySelector("input").innerHTML

• document.write("value")

What is the purpose of the onclick attribute in calculator buttons?

• To specify a function to execute when the button is clicked

• To add styles to the button when clicked

• To link to an external JavaScript file

• To display the button's text

Why is JavaScript necessary for creating a functional HTML calculator?

• It processes user input and performs calculations in response to button clicks.

• It determines the overall layout and structure of the calculator.

• It links the calculator to a database.

• It adjusts the colors and fonts of the calculator buttons.

How can you ensure the calculator displays results dynamically without refreshing the page?

• Use JavaScript to update the DOM elements in real-time.

• Use inline CSS styles in the HTML structure.

• Link to an external CSS file.

• Use the tag to submit the page.

Why might you use CSS grid or flexbox in designing the calculator layout?

• To arrange buttons and display elements in a structured, responsive way.

• To add animations to the calculator buttons.

• To dynamically update input values based on calculations.

• To write inline styles directly in the tags.

A student wants their HTML calculator to include a "clear" button to reset the input and output fields. Which JavaScript function would accomplish this?

• document.getElementById("field").value = "";

• document.write("");

• document.style.color = "white";

• document.removeChild("field");

Which HTML element is primarily used to display results in a calculator?

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