jQuery Interview Questions and Answers

jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. We have listed of jQuery interview questions and Answers that have been designed for jQuery professionals who are preparing interviews on jQuery.

Best jQuery Interview Questions and Answers 

How to use jQuery?

jQuery can be easily used with other libraries so it should work out of the box with simple and complex JavaScript and Ajax. 

What is jQuery?

j Query is a light weight JavaScript library which provides fast and easy way of HTML DOM traversing and manipulation, its event handling, its client side animations, etc. One of the greatest features of jQuery is that jQuery supports an efficient way to implement AJAX applications because of its light weight nature and make normalize and efficient web programs. 

With jQuery UI 1.7 being released in the last few days, what do you see as the key parts of jQuery UI 1.7?

What are you most proud of out of that release? 

The framework has matured so much since 1.5. We have taken great care to unify our API, fix hundreds of compatibility and behavior issues, and now we truly have a foundation to build upon without needing to rewrite the core functionality again and again. This will allow us to push our features in the next releases in literally no time.

What were the biggest challenges of getting the 1.7 release out there?

Our test coverage is still incomplete, and with every fixed bug, we introduced 2 others, which made the arrival at a stable level extremely difficult. Every week, there were some 50-100 bugs entered in the bug tracker, and there was literally no end. Luckily, we were able to triage the bugs to critical and blockers and solve these in time for a release. You have to have a lot of guts to push out a release that’s still imperfect – but an imperfect release is better than one that gets delayed for months. You can always roll out 1.7.1. 

What are your tools of choice to get the jQuery job done?

For editing files, I love the e text editor (yep, the name is “e”). It basically started as a textmate clone for windows, but since then grew into something much greater. One of the features I can’t live without now is there great multiple selection support. Hold down CTRL, select a couple words through double clicking and then type over all of them. 

What’s next on the hit list with jQuery UI?

There’s a lot of movement right now. We finally pushed out 1.7 3 days ago, which we believe is a solid foundation for everything that’s coming in in the next couple of months. While 1.7 was a stability and foundation release, the next releases will concentrate around features, so expect to see many more components soon. Some examples are the color picker, menu, grid, tooltip and tree widgets.

Is it too early to discuss jQuery UI 1.8?

There’s a lot on our list for the year. Filament Group did a great job to start a list of all widgets they could imagine being part of j Query UI, which can be found and discussed in the jQuery UI planning. There’s no definite roadmap for 1.8 yet, but some components are likely to make it into the next release. 

What is jQuery Connect?

It is a jQuery plugin which enables us to connect a function to another function. It is like assigning a handler for another function. This situation happens when you are using any JavaScript plugins and you want to execute some function whenever some function is executed from the plugin. This we can solve using j query connect function.

How to use jQuery.connect?

download jquery.connect.js file, include this file in your html file and use $. connect function to connect a function to another function.

Do you have plans for a new jQuery plug-in or something else we should look out for? Where to from here for the imgPreview plugin?

I’m not sure, I’m largely unpredictable when it comes to j Query; I’m still learning! If anyone has any requests, feel free to forward me them! As for the imgPreview plugin I hope to keep it under constant development; any contributions or suggestions are welcomed!

Why is jQuery better than JavaScript?

jQuery is great library for developing ajax based application. It helps the programmers to keep code simple and concise and reusable. * jQuery library simplifies the process of traversal of HTML DOM tree. jQuery can also handle events, perform animation, and add the Ajax support in web applications.

What is jQuery terminology?

 jQuery function: refers to the global jQuery object or the $ function depending on the context

jQuery object: the object returned by the jQuery function that often represents a group of elements

Selected elements: the DOM elements that you have selected for, most likely by some CSS selector passed to the jQuery function and possibly later filtered further.

There are lot of opportunities from many reputed companies in the world. You still have opportunity to learn and move ahead in your career in jQuery. We  have listed some if jQuery Interview Questions 2018 that helps you in cracking your interview & acquire dream career as jQuery.