Which jQuery method is used to select elements by their class name?

What does the .attr() method do in jQuery?

A). Add attributes

B). Get or set attributes

C). Remove attributes

D). Toggle attributes

How do you select an element with ID 'example' using jQuery?

A). $('example')

B). $('#example')

C). $('.example')

D). document.getElementById('example')

What is the purpose of the .html() method in jQuery?

A). Change HTML content

B). Get HTML content

C). Add HTML content

D). Hide an element

Which of the following is true about jQuery selectors?

A). Select by tag name

B). Cannot select by ID

C). Can select by various criteria

D). Limited to selecting parent elements

What is the purpose of the .on() method in jQuery?

A). Loop through elements

B). Handle events

C). Create animations

D). Perform AJAX requests

What does the .val() method do in jQuery?

A). Remove form inputs

B). Validate form inputs

C). Get or set the value

D). Add validation rules

How can you animate an element's width using jQuery?

A). $('#element').animate({width: '+=100px'})

B). $('#element').animate({width: '100px'})

C). $('#element').width('100px')

D). $('#element').style

What is the purpose of the .addClass() method in jQuery?

A). Remove a class

B). Add a class

C). Toggle a class

D). Hide an element

What does the $ sign represent in jQuery syntax?

A). Variable name

B). Define a function

C). jQuery object

D). Comment

What is the purpose of the .fadeIn() method in jQuery?

A). Show element with fading effect

B). Hide element with fading effect

C). Toggle visibility of element with fading effect

D). Adjust opacity of element gradually