📌 새로고침

location.reload();
window.location.reload();
location.href
window.location.href;
history.go(0);

📌 새로고침 막기

function doNotReload(){
    if( (event.ctrlKey == true && (event.keyCode == 78 || event.keyCode == 82)) || (event.keyCode == 116) ) {
        event.keyCode = 0;
        event.cancelBubble = true;
        event.returnValue = false;
    } 
}
document.onkeydown = doNotReload;