scroll-lock

Is it possible to check the status of Scroll Lock, Num Lock and Caps Lock on page load of a web page? I've found ways to check after a keypress using JavaScript, but that's not what I'm asking. No, you can't get system state from javascript. You will need them to type something and then analyze the input. Probably not what you wanted to hear =/ IN 2019, this is now possible: var x = event.getModifierState("ScrollLock"); Source: https://www.w3schools.com/jsref/event_mouse_getmodifierstate.asp 来源： https://stackoverflow.com/questions/9060073/check-scroll-lock-num-lock-caps-lock-in-javascript-on

1) If you have a Google Plus account, go to your home page. 2) On the right side, there's a list of "Add to Circle" buttons that you can hover over. 3) Notice that when you hover over one of the Add to Circle dropdown (if you have enough circles to have scrolling in the dropdown) the page scrolling feature is disabled. Only scrolling vertically in the dropdown is allowed. How is this done with javascript? I can scroll in here (the scroll bar on the right), but can't scroll on the page body while this is dropped down. The have an element that has a fixed height and is overflow auto, they styles