[Solved] Loop and animate a div

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First fix your other issues.

Inside separate js file: BrowserName is not defined. Is it supposed to be a var or function? It you want to check the browser you can use navigator.userAgent and test for certain strings. Search this site for more info.

Scroll function: be careful with using function names. They may be reserved words. scroll is a word used by windows and by jquery.

Your onwheel and onkeydown seem to pass only 1 parameter into your function, so that’s why your 2nd param is undefined. Why not do something like:

document.onwheel=doScroll;
document.onkeydown=doScroll;

function doScroll(e){
// e will contain the event
  if (e.keyCode == 38 || e.deltaY < 0 ) console.log("Up!");
}

After you fix these you handle other issues… maybe create a new post for it.

solved Loop and animate a div