What is the purpose of the self-invoking function in jQuery plugins?
A). Encapsulation
B). Event binding
C). Animation
D). Ajax handling
Which method is used to extend jQuery's functionality by adding a plugin?
A). $.fn.extend()
B). $.fn.add()
C). $.fn.plugin()
D). $.fn.new()
How can you pass options to a jQuery plugin?
A). As an object
B). As a string
C). As an array
D). As a number
Which jQuery method is used to merge two or more objects?
A). $.extend()
B). $.merge()
C). $.combine()
D). $.concat()
How do you ensure a jQuery plugin supports method chaining?
A). Return this
B). Use $.fn.chain
C). Call the chain() method
D). Use return false
In a jQuery plugin, how do you select the current element?
A). this
B). $(this)
C). element
D). $(element)
What does the $.each() method do in jQuery?
A). Iterates over elements
B). Filters elements
C). Binds events
D). Animates elements
What is a common use of jQuery plugins?
A). Enhancing user interfaces
B). Connecting to databases
C). Server-side scripting
D). File handling
How can you hide an element using a jQuery plugin?
A). this.hide()
B). this.visible(false)
C). this.remove()
D). this.display('none')
What does the $.extend() method do in a jQuery plugin?
A). Merge objects
B). Create animations
C). Handle events
D). Perform Ajax requests