> For the complete documentation index, see [llms.txt](https://javascriptuse.gitbook.io/advanced/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://javascriptuse.gitbook.io/advanced/javascript-chuyen-sau-higher-order-function-phan-2-closure-currying-callback.md).

# \[JavaScript chuyên sâu] - Higher order function - phần 2: closure, currying, callback

https\://www\.youtube.com/watch?v=G2fo9dQ1DPM\&list=PLmSai9ZRK6uyZ7L8k10pOSvQRhZbg1W4w\&index=2

```
function taikhoan(tiencuatoi) {
    let myMoney = tiencuatoi;
    return {
        xem: function() {
            return `Bạn có ${myMoney} trong tài khoản 👍`
        },
        nap: function(amount) {
            myMoney = myMoney + amount;
        },
        rut: function(amount) {
            if(amount > myMoney) {
                retun "Hết tiền";
            }
            myMoney = myMoney - amount;
        }
    }
}
```