YourAppURL

Replace the value you are getting underneath the app above.

The ultimate guide to web development interviews. Developed by FAANG engineers, practice with real-world interview questions covering network security, system design, SEO, APIs, and more.

oct6.tar.gz

server

JavaScript

Grunt

webpack

webpack-loaders

Grunt-eslint

ProgressiveRendering

webpack-code-splitting

This course compiles a comprehensive range of questions that are most likely to be asked during the frontend interview. Where many interview prep courses focus on data structures and algorithms, this course focuses on a variety of topics from network security to system design.

In this course, you will solve interview questions that cover general aspects of web development. You’ll start by going over network security and optimization techniques for load balancing and browser rendering. After that, you’ll move on to interview questions around SEO, APIs, and system design.

Overall, these are questions that are often overlooked, but they can really make you stand out from your peers. By the end of this course, you will have the confidence and ability to go in and ace that interview.

Web Development Interview Handbook

AJAX requests are always sent asynchronously.

Yes, because of the `true` argument in `open()`.

Consider the following code:
```javascript
var xhttp = new XMLHttpRequest();
xhttp.open("GET", "results.txt", true);
```
Will the request be sent asynchronously?

Consider the following code:
<pre><code class="language-javascript">var xhttp = new XMLHttpRequest();
xhttp.open(&quot;GET&quot;, &quot;results.txt&quot;, true);
</code></pre>
Will the request be sent asynchronously?

AJAX is the only way to send requests to servers in the background.

AJAX is the only way to send requests to servers in the background.

What should the value of the `readyState` property of an `XMLHttpRequest` to denote request completion be?

What should the value of the <code>readyState</code> property of an <code>XMLHttpRequest</code> to denote request completion be?

AJAX polling requires AJAX, whereas long polling can be managed with simple JavaScript.


Long polling necessarily incurs fewer requests.


AJAX polling opens new connections at regular intervals, whereas long polling is done over a single connection until data is received.

What's the key difference between AJAX polling and long polling?

What’s the key difference between AJAX polling and long polling?

They allow for unidirectional data streams.

Which of the following is true about server-sent-events?

Which of the following is true about server-sent-events?

AJAX is a great tool to have under your belt! Let's test how much you know about it in this lesson.

Introduction

Network

Security

Optimizing Loading Performance

Optimizing Browser Rendering Performance

Search Engine Optimization

System Design

APIs

Testing

Version Control

Task Runners & Bundlers

Conclusion

AJAX: Quiz