The main content of this article is derived from mini-pack. The example code differs slightly from the original project's code. When…

Key code: Copy var xhr = new XMLHttpRequest(); xhr.onreadystatechange = function() { if (xhr.readyState === 4 && xhr.status === 200) {…

Axios 是什么 Axios 是一个基于 promise 的网络请求库，可以用于浏览器和 node.js Axios 使用简单，包尺寸小且提供了易于扩展的接口。 https://www.axios-http.cn/ -- 使用 axios 直接使用 url 发送请求 后端需配…

If you are familiar with Web Component, then you must know about Shadow DOM. Shadow DOM is used to create a separate DOM tree that is…

This time, the ECMA TC39 Technical Committee has passed a draft of ECMAScript language features on GitHub. For more details, you can check…

Data Property Descriptors value: value writable: whether the value can be changed enumerable: whether it can be enumerated (forin, Object…

Number Numbers are divided into integers and floating-point numbers, which can be represented using decimal, octal, hexadecimal, and…

对网站的javascript文件进行分析，查找js文件中是否存在敏感信息，有的开发者会将接口、url、参数、accesskey等信息放在js文件中，所以就可以分析js文件查找这些内容。

In the process of writing and maintaining front-end code, we often encounter scenarios where performance optimization is needed. Especially…