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