jQuery Multiple Choice Questions (MCQs) and Answers

To display messages

To create a popup window

To confirm user actions

To display forms

.disableButton()

.button("disable")

.disable()

.buttonDisable()

Using the .preventClose() method

Modifying the closeText option

Setting the modal option to true

Overriding the close event

$("#date").datepicker()

$("#date").initDatepicker()

$("#date").setDatepicker()

$("#date").createDatepicker()

.resizable()

.makeResizable()

.enableResize()

.setResizable()

.dialog({effect: "bounce"})

.dialog({show: {effect: "bounce", duration: 1000}})

.animateDialog("bounce")

.dialogAnimate("bounce")

jQuery UI is not loaded

The widget's script is corrupted

The browser is incompatible

JavaScript is disabled in the browser

Check if the dialog div is hidden

Ensure the .dialog() is correctly called

Verify there are no JavaScript errors in the console

All of the above

It triggers a delegated event

It attaches a handler to the parent for any event that occurs on matching children

It directly binds events to elements

It replaces all previous events

Linking several methods on different jQuery selectors

Connecting similar events into a single handler

Applying multiple methods in a single, continuous line of code on the same element set

Combining multiple CSS files into one request

Using the .loadScript() method

Using the .getScript() method

Using the .ajax() method with a script parameter

Using the .script() method

To avoid conflicts with other JavaScript libraries that use the $ symbol

To reset jQuery variables

To clear all jQuery data from a page

To reload jQuery settings

Custom events are used to handle native browser operations

They're used to manage AJAX requests exclusively

They allow developers to define and trigger their own events

They are a method to speed up event handling

$(document).ajaxComplete(function() {})

$.on('ajaxComplete', function() {})

$.ajaxSetup({complete: function() {}})

$(document).on('ajaxComplete', function() {})

.extendAjax()

.ajaxExtend()

.ajaxSetup()

.setupAjax()

Using .defer()

Using .promise()

Using .async()

Using .wait()

Plugin's event binding

Conflict with jQuery versions

Syntax errors in event names

Incorrect method calls

Checking for excessive DOM manipulations

Optimizing event handlers

Utilizing jQuery's Performance tool

Implementing throttling or debouncing techniques

.closest()

.find()

.children()

.end()

Reduces memory usage by handling events at a parent level

Increases the number of event handlers

Simplifies code complexity

Enhances page loading speed

Reduces readability

Increases execution time

Optimizes performance by reducing the scope of DOM traversal

Can lead to errors

Reduces the scope of each search

Lowers memory footprint

Decreases the chance of selecting unintended elements

All of the above

Appending each element individually

Creating a string of HTML and appending once

Using a document fragment

Looping through an array of elements

Detaching elements, making modifications, and reattaching

Simply removing elements temporarily

Clearing content before reinsertion

Using it instead of .remove()

Check if CSS transitions could be used instead

Ensure no heavy scripts are running concurrently

Verify jQuery version compatibility

Optimize image sizes

Use browser performance tools to analyze selector efficiency

Simplify selectors

Increase specificity of selectors

All of the above

To import other libraries into jQuery

To enhance jQuery performance

To relinquish control of the $ symbol

To merge two libraries

By automatically adjusting its methods

By using its own version of the JavaScript engine

By using a compatibility mode

By minimizing its footprint

Loading jQuery first

Defining all libraries in separate JavaScript files

Using aliasing for jQuery

Loading all libraries asynchronously

Load libraries synchronously

Load libraries in the footer

Use a single minified file for all libraries

Use asynchronous loading methods