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Summary of related content about front-end and back-end interaction

伊谢尔伦
Release: 2017-06-13 11:38:43
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Foreword For a front-end engineer, he not only needs to know the front-end content, but also needs to be proficient in back-end technology. Today I will use a case to describe how the front end interacts with the back end. koa is built by the original team of Express and is committed to being a smaller, more expressive, and more robust web framework. Using koa to write web applications, by combining different generators, you can avoid repeated and cumbersome callback function nesting, and greatly improve the efficiency of error handling. koa does not bind any middleware in the kernel method. It only provides a lightweight and elegant function library that makes writing web applications easy. Preparation work First, our server needs to deploy the Nodejs environment. Here I use the local server of Nodejs under windows for demonstration. To deploy the NodeJS environment, please see: "Detailed Graphical Explanation of the Steps to Install Node.js on Windows Systems". Friends who are not familiar with the Koa framework can refer to this article: Getting started with the Koa framework of Node.js and MySQL operation guide. The method is as follows to deploy the environment properly

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