https://github.com/seajs/seajs" target="_blank" rel="noopener noreferrer">Sea.js</a></li></ul><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="24-umd-universal-module-definition">2.4 UMD (Universal Module Definition)<a href="#24-umd-universal-module-definition" class="hash-link" aria-label="Direct link to 2.4 UMD (Universal Module Definition)" title="Direct link to 2.4 UMD (Universal Module Definition)">​</a></h4><p>UMD，即通用模块定义。UMD 主要为了解决 CommonJS 和 AMD 规范下的