js：动态import导入script脚本文件

<script>
   var _hmt = _hmt || [];
    (function() {
      var hm = document.createElement("script");
      hm.src = "//hm.baidu.com/hm.js?64ecd82404c51e03dc91cb9e8c025574";
      var s = document.getElementsByTagName("script")[0]; 
      s.parentNode.insertBefore(hm, s);
    })();
</script>

// 动态导入script
function importScript(src) {
  var hm = document.createElement("script");
  hm.src = src;
  var s = document.getElementsByTagName("script")[0];
  s.parentNode.insertBefore(hm, s);
}

$ pnpm i http-server
# 开启静态服务器
$ npx http-server -p 5500 -c-1

$ tree 
.
├── index.html
├── js
│   └── hello.js
└── script.js

<!-- 引入js -->
<script src="./script.js"></script>

// 动态导入script
function importScript(src) {
  var hm = document.createElement("script");
  hm.src = src;
  var s = document.getElementsByTagName("script")[0];
  s.parentNode.insertBefore(hm, s);
}
(function () {
  importScript("/js/hello.js");
})();

console.log('Hello');
// 导入成功后控制台输出：Hello