JS Explicit Binding
[JS Function apply()](https://texonom.com/js-function-apply-08d1ab1efba34c8e91d4b1d2b2bc12b3) [JS Function bind()](https://texonom.com/js-function-bind-f93dc5e9b5d94f89a9fd2cc91be77e6a) @js Function.call




### Binding great Explanation
> [자바스크립트 this 바인딩 우선순위](https://jeonghwan-kim.github.io/2017/10/22/js-context-binding.html)





