How to hide javascript (four methods)

In web development, JavaScript is a commonly used scripting language. It can add a lot of interaction and animation effects to web pages. However, in some cases, developers need to hide JavaScript code to achieve certain purposes, such as preventing code be copied, encrypted script code protects web pages, etc. This article will introduce several ways to hide JavaScript.

Method 1: Encrypt JavaScript code

1. Manual encryption

Manual encryption is to encrypt the original JavaScript code by writing your own code, making the code difficult to understand and decoding. This method is suitable for encrypting a small amount of JS code. String replacement, random variables, reversible encoding, etc. can be used.

2. Use third-party encryption tools

In addition to manual encryption, you can also use third-party encryption tools, such as Closure Compiler, UglifyJS, etc., which can compress and obfuscate JavaScript to achieve Code encryption purposes.

Method 2: Use external files to import

Save the JavaScript code in an external file and reference it to the web page through a link. This method can make the code difficult to obtain, but this It is only hidden and cannot truly achieve the purpose of encryption. At the same time, if the external file is obtained, the code still faces the risk of being decrypted.

Method 3: Use JavaScript framework

Today’s most popular front-end frameworks, Vue, React, AngularJS, etc., all support hiding JavaScript code inside the framework. The advantage of using a framework is that the corresponding code encryption and decryption mechanism is implemented inside the framework, and the access rights of JavaScript code are protected, greatly reducing the risk of JavaScript code being decrypted.

Method 4: Compile JavaScript code into other languages

Compiling JavaScript code into other languages ​​is also a simple and hidden method, because other language codes are difficult to convert into readable code. This prevents malicious attackers from obtaining sensitive information. JavaScript can also be compiled into a binary file, which can only be read and used under correct decryption conditions, which greatly enhances the security of JavaScript code.

Summary:

Hiding JavaScript code is a way to protect web page security. The four methods mentioned above are all good methods, but they are not perfect and can only improve the security of web pages. The role of code security cannot completely avoid the risk of being decrypted. Therefore, during development, we need to combine the knowledge and technical means of secure programming on the basis of code writing to fully ensure the security of web pages.

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