What does the removeChild() method do in JavaScript?
A). Removes a specified child node from an existing element in the DOM
B). Appends a new child node to an existing element in the DOM
C). Replaces an existing child node with a new node in the DOM
D). Creates a new parent node for an existing child node in the DOM
How can you change the font size of an HTML element using JavaScript?
A). element.style.fontSize = '16px';
B). element.style.font = '16px';
C). element.fontSize = '16px';
D). element.font = '16px';
How can you add a CSS class to an HTML element using JavaScript?
A). element.classList.add('className');
B). element.className = 'className';
C). element.style.class = 'className';
D). element.addClass('className');
Which JavaScript property is used to change the source (URL) of an image element?
A). src
B). url
C). href
D). source
How can you dynamically change the background color of an HTML element based on user actions using JavaScript?
A). Use event listeners like addEventListener to detect user actions and update the element's background color
B). Use inline JavaScript in the HTML element's onclick attribute to change the background color
C). Use the onHover event directly in the HTML element's tag to change the background color
D). Use the element.background = 'color'; property in JavaScript to directly modify the element's background color
Which JavaScript event is triggered when a user clicks on an HTML element?
A). click
B). hover
C). submit
D). change
How can you remove an HTML element from the DOM using JavaScript?
A). element.remove()
B). element.removeChild()
C). element.delete()
D). document.removeElement(element)
How can you hide an HTML element from the user interface using JavaScript?
A). element.style.display = 'none';
B). element.style.visibility = 'hidden';
C). element.visible = false;
D). element.style.opacity = 0;
What does the appendChild() method do in JavaScript?
A). Appends a new child node to an existing element in the DOM
B). Removes a child node from an existing element in the DOM
C). Replaces an existing child node with a new node in the DOM
D). Creates a new parent node for an existing child node in the DOM
Which JavaScript method is commonly used to create a new HTML element dynamically?
A). document.createElement()
B). document.appendElement()
C). document.makeElement()
D). document.createNode()