HTML | DOM Window opener Properties

Last Updated : 26 Jul, 2019

The Window opener property in HTML DOM is used to return the reference of newly created windows. This property is used to return the details of the source (parent) window. A window is opened using the window.open() method and closed using the window.opener.close() method.

Syntax:

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window.opener

Return Value: It returns the reference of created window.

Example 1:

<!DOCTYPE html>
<html>
      
<head>
    <title>
        HTML DOM Window opener Property
    </title>
</head>
  
<body>
      
    <h2>
        HTML DOM Window opener Property
    </h2>
      
    <button onclick = "myGeeks()">
        Click Here!
    </button>
  
    <!-- script to open new windows -->
    <script>
        function myGeeks() {
            var win = window.open("", "win",
                        "width = 500, height = 300");
                          
            win.document.write("<p>New Window</p>");
              
            win.opener.document.write("<p>Parent Window</p>");
        }
    </script>
</body>
  
</html>                                    

Output:
Before click on the button:

After click on the button:

Example 2:

<!DOCTYPE html>
<html>
      
<head>
    <title>
        HTML DOM Window opener Property
    </title>
</head>
  
<body>
      
    <h2>
        HTML DOM Window opener Property
    </h2>
      
    <button onclick = "myGeeks()">
        Click Here!
    </button>
      
    <!-- script to create two window -->
    <script>
        function myGeeks() {
            var win1 = window.open("", "win1", 
                    "width = 500, height = 300");
                      
            var win2 = window.open("", "win2",
                    "width = 400, height = 250");
                      
            win1.document.write("<p>New Window 1</p>");
            win2.document.write("<p>New Window 2</p>");
              
            win1.opener.document.write("<p>Parent Window</p>");
            win2.opener.document.write("<p>Parent Window</p>");
        }
    </script>
</body>
  
</html>                    