jQuery Multiple Choice Questions (MCQs) and Answers

var jq = jQuery.noConflict();

jQuery.noConflict(true);

var $j = $.noConflict();

var $j = jQuery.noConflict();

By modifying jQuery's prototype directly

By adding new methods using jQuery.fn.extend()

By rewriting existing jQuery methods

By isolating jQuery in an IIFE

Review the jQuery migration guide

Check for deprecated methods

Examine the console for errors

All of the above

Use script loaders

Adjust the order of script tags manually

Both

Implement callbacks for dependent scripts

Checking the jQuery version compatibility

Reviewing the console for errors

Ensuring jQuery is properly loaded

Verifying HTML structure

They automatically correct syntax errors

They optimize code performance

They help identify syntax and other errors

They encrypt the code

Break down selectors into simpler parts

Use only ID selectors

Avoid using CSS classes

Use inline styles instead of selectors

$(document).ready()

$(window).load()

$(document).start()

$(document).init()

Attach it to load events to handle errors

Apply it to any jQuery object

Use it to log errors in AJAX requests

It's deprecated

Verify the selector in the console

Change the selector until it works

Use a default selector

Ask a colleague for help

It reduces memory usage by managing fewer event handlers

It allows easier management of events

It isolates event handlers

It simplifies event handler updates

Adding console.log() statements within event handlers

Using performance profiling tools

Monitoring network requests

Setting conditional breakpoints

Monitoring memory usage over time in browser tools

Checking for detached DOM elements

Both

None of the above

To check for syntax errors

To ensure that each function works as intended

To enhance performance

To simplify code

Integration testing combines all modules and tests them as a group

Integration testing tests a single function at a time

Integration testing is only for client-side scripts

Integration testing is quicker

It helps prevent regressions by automatically testing code changes

It replaces manual testing completely

It only tests new code

It simplifies the debugging process

Selenium

Jasmine

QUnit

Mocha

Using $.trigger() to mimic events

Using .click() to force actions

Using setTimeout()

Using manual testing

Checking the event log in the browser's developer console

Using alert boxes

Using console.log in event handlers

Rewriting the event handlers

They can pause execution at critical points

They can modify code on the fly

They can bypass errors

They can simulate server responses

Revert all changes

Run the test in a different environment

Check the change log for clues

All of the above

Increasing timeout settings

Refactoring the tests to handle asynchronous results

Running the tests multiple times

Ignoring the failures

Faster load times due to cached versions

It is more secure

It provides automatic updates

It requires less configuration

It reduces the readability of code

It increases execution speed by minimizing DOM access

It simplifies the syntax

It increases memory usage

It reduces the chance of selecting unintended elements

It limits the scope of each search, reducing processing time

It enhances security

It simplifies debugging

Using .click() directly on the elements

Using .on() delegated from a static parent

Using .bind() on each element individually

Using .live() on document

By using the global .ajaxSetup() for all configurations

By customizing each request with specific parameters

By always using synchronous requests

By limiting AJAX calls to client-side operations only

Setting breakpoints in all scripts

Logging all actions in the console

Using the MutationObserver API

Inspecting elements in real time

Checking for any CORS issues

Ensuring all external resources are correctly loaded

Verifying that the jQuery version matches

Confirming script load order

Regularly updating the code according to the jQuery migration guide

Ignoring deprecation warnings

Using older versions of jQuery indefinitely

Using only core jQuery features