HTML | DOM MouseEvent screenX Property

Last Updated : 31 Jan, 2019

The MouseEvent screenX property is used for returning the horizontal coordinate of the mouse pointer whenever this event is triggered. It returns a number which represents the horizontal distance of the mouse pointer relative to the screen in pixels.

The MouseEvent screenX property is a read-only property and it returns a number which represents the horizontal coordinate of the mouse pointer in pixels.

Syntax :

event.screenX

Below program illustrate the MouseEvent screenX property :

Program: Finding out the horizontal coordinates of the mouse pointer, relative to the screen, when the mouse button is clicked on an element.

<!DOCTYPE html> 
<html> 
<head>  
    <title>MouseEvent screenX Property in HTML</title>  
    <style>  
        h1  
        {  
            color:green;  
        }  
      
        h2 
        { 
            font-family: Impact; 
        } 
      
        body  
        {  
            text-align:center;  
        } 
    </style>  
</head> 
  
<body> 
    <h1>GeeksforGeeks</h1>  
    <h2>MouseEvent screenX Property</h2> 
      
    <p onclick="coord(event)"> 
        Click somewhere in the paragraph to  
        get the x(horizontal) coordinates of  
        the mouse pointer. 
    </p> 
      
    <p id="test"></p> 
      
    <script> 
        function coord(event)  
        { 
            var x = event.screenX; 
            var coords = " X coords: " + x; 
            document.getElementById("test").innerHTML = coords; 
        } 
    </script> 
</body> 
</html>                                       