JavaScript (Translated by ChatGPT)

Introduction

To be honest, the prototype chain in JavaScript has always been a topic that I am afraid of. The reason is simple, it is really difficult to understand. Just a bunch of terms and complex relationships can drive you crazy, such as prototype, __proto__, constructor, Object.prototype, Function.prototype, new, etc.

However, this is indeed a very important part of JavaScript and a must-have question for interviews. Even if you don’t understand it now, you will eventually have to understand it someday, otherwise you will never be able to improve your technical skills.

There are many articles about the prototype chain that you can find on the internet, and each one has a different way of understanding it. Some of them directly use a lot of technical terms, which can scare you to death. It wasn’t until recently that I read a few articles that I thought had a better perspective, that I truly understood the prototype chain.

So, let’s take this opportunity to learn more about the prototype chain in JavaScript! This article is suitable for those who have a basic understanding of JavaScript but are not very clear about it. If there are any mistakes in the article, please feel free to point them out in the comments. Thank you.

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Web (Translated by ChatGPT)

Preface

A few weeks ago, I encountered some problems related to cookies at work. Before that, I thought to myself: “Cookies are just like that. Even if some attributes are not familiar, just search for information online. There are no difficult problems related to cookies, right?”

However, the fact proved me wrong. I really encountered a cookie problem that took me a long time to solve.

I believe that many people are eager to try it when they see this. So let me ask you first:

Under what circumstances will cookies not be written?

Obvious syntax errors don’t need to be mentioned. In addition to this, you may answer: writing cookies for a completely different domain. For example, your webpage is on http://a.com, but you insist on writing cookies for http://b.com. Of course, cookies cannot be written in this situation.

Or, you may answer: adding the Secure flag to cookies that are not on https. Yes, cookies in this situation cannot be written either.

Can you think of anything else?

If you can’t think of anything, let me tell you!

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Front-end (Translated by ChatGPT)

Introduction

Recently, I encountered some cases of CSRF and took the opportunity to study it thoroughly. After in-depth research, I found that this attack is actually quite scary because it is easy to overlook. Fortunately, some frameworks now have built-in CSRF defense functions that can be easily enabled.

However, I still think it is necessary to understand what CSRF is, how it attacks, and how to defend against it. Let’s start by briefly introducing it!

CSRF is a type of attack on the web, which stands for Cross Site Request Forgery. Don’t confuse it with XSS, they are two different things. So what is CSRF? Let’s start with an example of my own.

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Others (Translated by ChatGPT)

Introduction

Recently, I have been working on live streaming related projects. Although I am a frontend developer, I still need to understand some of the principles of live streaming. At least, I need to know what formats are available and what are the advantages and disadvantages of each format. This will make the development process smoother.

This article will briefly record some of my experiences and information. If you want to have a deeper understanding of HLS, you can refer to the following two articles:

  1. Choosing a Live Streaming Protocol: RTMP vs. HLS
  2. HLS Protocol for Online Video - Study Notes: M3U8 Format Explanation and Practical Application Analysis

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Back-end (Translated by ChatGPT)

Introduction

Redis is an in-memory key-value database, often used for caching data to reduce the load on the backend database. This article will briefly introduce some of the useful features of Redis and where it can be applied.

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Android (Translated by ChatGPT)

(Original article published at: http://blog.techbridge.cc/2016/05/20/fast-way-to-get-apk-information/)

Introduction

In a previous article, we introduced how to decompile an Android APK. By decompiling, we can obtain a lot of information related to the APK, such as AndroidManifest.xml. With this file, we can see some basic information about the APK, and also see the entire code of the APK and the resources used (pictures, videos, sounds, etc.).

But if today we only want to know the basic information, and we don’t care about how the APK is written or what resources it uses, what should we do? Decompiling takes some time, and the larger the APK, the longer it takes. Is there a better way?

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Back-end (Translated by ChatGPT)

(Original post published at: http://blog.techbridge.cc/2016/04/23/fast-restful-nodejs-api-backend/)

Introduction

Some websites today use the Single Page Application approach, where the backend only provides APIs for the frontend to fetch data, achieving complete separation of the frontend and backend. There are many choices for the frontend, you can use Angular, Ember.js, or React + Redux. As for the backend API, it must conform to a fixed format to make it easier for frontend developers to fetch data. And this “fixed format” is most commonly known as our focus today: RESTful.

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Algorithm (Translated by ChatGPT)

Introduction

When writing programs, we often use the “search” function. The simplest search is to find the number you want in a string of numbers, which is also our topic today.

This article will be divided into three parts. The first part will introduce the linear search method, the second part will introduce the binary search method, and the last part will discuss the different implementation methods of the binary search method under different conditions.

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