js-feature-detect. A lightweight library to detect support for specific JavaScript features, CSS properties, and ECMAScript versions in the browser.js-feature-detect 是一个用于检测浏览器是否支持特定的 JavaScript 特性、CSS 属性以及 ECMAScript 版本的小型库。它可以帮助开发者确保他们的应用在目标浏览器中能够正确运行，并提供了一种简单的方式来判断当前环境是否满足最低要求

Problem

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Audience

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