jQuery: Highlight element under mouse cursor? [duplicate]

Answer 1

All these answers are too complicated... Simple solution:

Javascript:

prevElement = null;
document.addEventListener('mousemove',
    function(e){
        var elem = e.target || e.srcElement;
        if (prevElement!= null) {prevElement.classList.remove("mouseOn");}
        elem.classList.add("mouseOn");
        prevElement = elem;
    },true);

Css:

.mouseOn{
  background-color: #bcd5eb !important;
  outline: 2px solid #5166bb !important;
}