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HTML | Window pageYOffset Property
  • Last Updated : 26 Jul, 2019

The Window pageYOffset property is used for returning the pixels of the current document which have been scrolled from the upper left corner of the window vertically. It is a read-only property and it returns a number which represents the number of pixels that the document has already been scrolled from the upper left corner of the window vertically.

Syntax:

window.pageYOffset

Below program illustrates the Window pageYOffset Property :

Getting the pixels that the document has already been scrolled from the upper left corner of the window vertically.




<!DOCTYPE html>
<html>
  
<head>
    <title>
      Window pageYOffset Property in HTML
    </title>
    <style>
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
          
        div {
            border: 2px black;
            background-color: yellow;
            height: 2000px;
            width: 200px;
        }
    </style>
</head>
  
<body>
  
    <h1>GeeksforGeeks</h1>
    <h2>Window pageYOffset Property</h2>
  
    <p>
      For returning pixels that the document has already
      been scrolled from the upper left corner of the 
      window vertically, double click the "Check 
      pageYOffset" button: 
    </p>
  
    <button ondblclick="offset()" >
        Check pageYOffset
    </button>
  
    <div>
    </div>
  
    <script>
        function offset() {
            window.scrollBy(100, 100);
            alert("pageYOffset : " + window.pageYOffset);
        }
    </script>
  
</body>
  
</html>

Output:

After clicking the button

Supported Browsers: The browser supported by Window pageYOffset Property are listed below:

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Opera
  • Safari



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