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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

# Problem: your money gets stolen online!


Imagine you are checking your bank balance via your bank's website. Meanwhile, you open a blogging website in another tab. You finish with the blogging website and come back to your banking website. You notice that your account balance has been wiped clean! All the money went away after you opened that blogging website! What could have happened?

# The cause
So, it turns out that the blogging website had sent an HTTP request to your banking website for a funds transfer. When a website can access a resource or execute commands on another domain via HTTP requests, the process is called cross-origin resource sharing. This is a problem because it can be abused, like in the case above. So, the good news is, you, as a website owner, can now decide who gets to access the website’s resources to facilitate sharing images between websites. How do we do that? Well, keep reading to find out!


# Solution: cross-origin resource headers

On the server-side, you can decide what other domains get to access a certain resource. Consider the following simple web app. It serves up an HTML file.

Protecting your website's resources from other domains is important! Let's see why 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

Cross-origin Resource Sharing

Problem: your money gets stolen online!

The cause