The sad journey of using js to encrypt and decrypt tripledes

After two days of tossing and changing several js frameworks, I finally got a result. Come on. The code will be presented in the follow-up, and detailed explanations will be given. After two days of tossing, I have learned a lot, and it is time to write a summary. (bytes, bits, key grouping, encryption principles, base64, Hex, etc.). Everything is difficult at the beginning, thank you for not giving up, perseverance and hard work, and finally see the light of day.