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JavaScript - OnMouseover / OnMouseout

The mouseover and mouseout events can be used to trigger a function when the user mouses over, or out of, an HTML element. These are events of any element within the document object.

Mouseover me

Syntax


// In HTML:
<element onmouseover="myScript"></element>

// In JavaScript:
object.onmouseover = function(){myScript};

// In JavaScript, using the addEventListener() method:
object.addEventListener("mouseover", myScript);



document.getElementById("demo").addEventListener("mouseover", function () { MakeRed(this); });
document.getElementById("demo").addEventListener("mouseout", function () { MakeNormal(this); });

function MakeRed(control)
{
    control.innerHTML = "Mouse over";
    control.style.color="#ff0000";
    control.style.background = "#ffcc00";
}

function MakeNormal(control)
{
    control.innerHTML = "Mouse out";
    control.style.color = "#000000";
    control.style.background = "#ffffff";
}