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HTML | DOM WheelEvent deltaX Property
  • Last Updated : 17 Jan, 2019

The WheelEvent.deltaX property in HTML is used to return a positive double value when the web page is scrolled horizontally along left or right direction. If the page is scrolled to right it return a positive value, and a negative double value when scrolled to the left, else it returns zero. It is a read-only property.

Syntax:

event.deltaX

Return Value: It returns a double value which indicates the scrolling direction of mouse wheel.

  • A positive double value represents mouse is scrolled to right.
  • A negative double value represents mouse is scrolled to left.

Example:




<!DOCTYPE html>
<html>
    <head>
        <title>DOM WheelEvent deltaX Property</title>
    </head>
  
    <body onwheel="Geeks(event)" 
          style="text-align: center; width: 1000px;">
      
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
      
    <h2>
        DOM WheelEvent deltaX Property
    </h2>
      
    <p>Scroll to see effect:</p>
      
    <p id="p"></p>
      
    <script>
        function Geeks(event) {
            var doc = event.deltaX;
            document.getElementById("p").innerHTML = doc;
        }
    </script>
      
    </body>
</html>                    

Output:
deltaX
Supported Browsers: The browser supported by deltaX property are listed below:

  • Apple Safari Not supported
  • Google Chrome 31.0
  • Firefox 17.0
  • Opera 18.0
  • Internet Explorer

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