HTML | DOM MouseEvent offsetY Property

Last Updated : 13 Jun, 2022

The MouseEvent offsetY property is a read-only property and is used for returning the y-coordinate of the mouse pointer, relative to the target element. The MouseEvent offsetY property returns a number which represents the vertical coordinate of the mouse pointer, in pixels with respect to the screen.

Syntax :

event.offsetY

Below program illustrate the MouseEvent offsetY property :

Program: Finding out the vertical coordinate of the mouse pointer relative to a <div> element.

html

<!DOCTYPE html>
<html>
<head> 
    <title>MouseEvent offsetY Property in HTML</title> 
    <style> 
    div
    {
        border:3px solid green;
        height:100px;
        width:500px;
    }
     
    h1 
    { 
        color:green; 
    } 
     
    h2
    {
        font-family: Impact;
    }
     
    body 
    { 
        text-align:center; 
    }
    </style> 
</head>
 
<body>
    <h1>GeeksforGeeks</h1> 
     
    <h2>MouseEvent offsetY Property</h2>
     
    <p>
        Click inside the green box to get the 
        y-coordinate relative to the top edge.
    </p> 
     
    <div onclick="coord(event)"></div>
     
    <p>
        The y-coordinate, relative to the top edge 
        of the DIV element is: 
        <span id="test"></span>
    </p>
     
    <script>
        function coord(event) 
        {
            var c = event.offsetY;
            document.getElementById("test").innerHTML = c;
        }
    </script>
</body>
</html>                                        