[JS] getWidth & getHeight

function getWindowWidth() {
    return window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
}


function getWindowHeight() {
   return window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
}

https://uxicode.tistory.com/entry/%EB%86%93%EC%B9%98%EA%B8%B0-%EC%89%AC%EC%9A%B4-%EC%82%AC%ED%95%AD%EB%93%A4-%EA%B8%B0%EB%B3%B8%EC%97%90-%EC%B6%A9%EC%8B%A4%ED%95%98%EC%9E%90

놓치기 쉬운 사항들 ( 기본에 충실하자 )