# 從頭開始 javascript 的學習紀錄 語法(3)
###### tags: `JavaScript 學習歷程`

* 模組化

#初始化
npm init 


- 點開package.json，加上

"type":"moudle",

- index.js

let myname = "Rex";

export { myname };

- text.js

import { myname } from "./index.js";

console.log(myname);   //Rex

- p.s也可以用export { ? as ? } 做處理

- try......catch......finally

try {
    console.log('Hello world');
} catch(err) {
    console.log("error");
} finally {
    console.log("error");
}
//Hello world
//error

{%hackmd S1DMFioCO %}