npm install rgutil

//1. 函数全部导入
import * as $R from "rgutil";

//写法:
 $R.isNumber(8)


//2. 按需导入
import { isNumber } from "rgutil";

//写法
 isNumber(8)

//纯html页面直接引用
//1. 立即执行函数直接引用
//<script src="rgutil.min.js"></script>
//或引用
//<script src="rgutil.umd.min.js"></script>

//在线直接引用
<script src="https://cdn.jsdelivr.net/gh/GuCangRan/rgutil/dist/rgutil.min.js"></script>
<script>
 
  let isNumber = $R.isNumber(8);
  console.log(isNumber)

 </script>

//2. ES6模块引用方式
<script type="module">

  import * as $R from 'rutil.esm.min.js'

  let isNumber = $R.isNumber(8);
  console.log(isNumber)

</script>