The onmouseover event occurs when the mouse pointer enters an element. The onmouseover event is often used together with the onmouseout event. HTML DOM Events · Onmouseout Event · W3Schools Tryit Editor · Mouse over me
5 天前 · The mouseover event is fired at an Element when a pointing device (such as a mouse or trackpad) is used to move the cursor onto the element or one of its child ... Syntax · Event properties · Examples