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HTML | Window self( ) Property
  • Last Updated : 26 Jul, 2019

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.



Below program illustrates the Window self() property:

Using Window self() property for comparison with the window top() property.

      Window self() property in HTML
        h1 {
            color: green;
        h2 {
            font-family: Impact;
        body {
            text-align: center;
    <h2>Window self() Property</h2>
      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
    <p id="MyWindow"></p>
        function Window() {
            if ( = window.self) {
                document.getElementById("MyWindow").innerHTML =
                    "This window is the topmost window.";
            } else {
                document.getElementById("demo").innerHTML =
                    "This window is not the topmost window.";


After clicking the button

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

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

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