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HTML | Window self( ) Property

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  • Last Updated : 13 Jun, 2022

The Window self() property is used for returning the current window. It is generally used for comparison purposes while using other functions such as top(). 
It is a read-only property and it returns a reference to the Window object itself.
Syntax: 
 

window.self

Return Value: Return reference of the Window object. 

Below program illustrates the Window self() property:
Using Window self() property for comparison with the window top() property.
 

html




<!DOCTYPE>
<html>
 
<head>
    <title>
      Window self() property in HTML
    </title>
    <style>
        h1 {
            color: green;
        }
         
        h2 {
            font-family: Impact;
        }
         
        body {
            text-align: center;
        }
    </style>
</head>
 
<body>
 
    <h1>GeeksforGeeks</h1>
    <h2>Window self() Property</h2>
 
     
 
<p>
      For checking whether the window is the topmost
      window or not, double click the "Check Top Window"
      button: </p>
 
 
 
    <button ondblclick="Window()">
      Check Top Window
    </button>
 
    <p id="MyWindow"></p>
 
 
 
    <script>
        function Window() {
            if (window.top = window.self) {
                document.getElementById("MyWindow").innerHTML =
                    "This window is the topmost window.";
            } else {
                document.getElementById("demo").innerHTML =
                    "This window is not the topmost window.";
            }
        }
    </script>
</body>
 
</html>

Output: 
 

After clicking the button 
 

Supported Browsers: The browser supported by Window self( ) Property are listed below: 
 

  • Google Chrome 1 and above
  • Edge 12 and above
  • Internet Explorer 4 and above
  • Firefox 1 and above
  • Opera 12.1 and above
  • Safari 3 and above

 


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