// ----- head.js -----
export const eye = '纯净的'
export const nose = '高耸的'
export default {
eye,
nose
}
// ----- index.js -----
// 想实现
// import {eye, nose} from './head.js'
// export {eye, nose}
export {eye, nose} from './head.js'
// 想改名
export {eye as pureEye, nose as loftyNose} from './head.js'
// 把 head.js 所有的 (default/eye/nose) 导出
export * from './head.js'
export * as headObj from './head.js'
// index.html
<body>
// 动态加载，前面无奈拿到 js 里的变量
<script type="module" src="./index.js"></script>
// 要想和数据互动
<script type="module">
import index from './index.js'
// do someting ...
</script>
</body>