Web Design Program Quiz 5

Web Design Quiz 5

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1. Which of the following is a valid way to declare a variable in JavaScript?

declare myVar;

let myVar;

var::myVar;

variable myVar;

2. In JavaScript, what is the purpose of the getElementById() method?

To retrieve an element based on its ID attribute

To retrieve an element based on its tag name

To retrieve an element based on its class name

To retrieve an element by its style property

3. What JavaScript event is triggered when a user clicks on an HTML element?

change

keypress

mouseover

click

4. Which of the following is used to add an event listener for a button click in JavaScript?

addEventListener(button, 'click', myFunction);

button.addEventListener('click', myFunction);

button.onClick = myFunction;

button.addEvent('click', myFunction);

5. In JavaScript, which property is used to change the content inside an HTML element?

htmlContent

content

innerHTML

textContent

6. How do you create an animation in JavaScript that changes the color of an element over time?

By using setTimeout() to change the color repeatedly

By applying CSS animations via JavaScript

By manipulating the element’s style property directly inside a setInterval()

By using the animate() method of jQuery

7. Which of the following JavaScript libraries simplifies DOM manipulation and event handling?

React

jQuery

Vue.js

AngularJS

8. How can you prevent the default action of a form submission using JavaScript?

event.preventDefault();

form.submit(false);

form.preventSubmit();

event.stopPropagation();

9. Which JavaScript method is used to animate changes in the CSS properties of an element, such as moving it across the screen?

animate()

setTimeout()

setInterval()

transition()

10. When using jQuery to hide an HTML element, which method would you use?

element.hide();

element.display('none');

element.setHidden(true);

element.visible(false);

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Web Design Program Quiz 5

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