Start Working With Browser Windows in JavaScript - How to maximize the current browser window using JavaScript
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Now, let us try to develop a simple script (JavaScript) to maximize the current browser window. Have a look at the following code:
<html>
<head>
<meta name=vs_targetSchema
content="http://schemas.microsoft.com/intellisense/ie5">
<script id="clientEventHandlersJS" language="javascript">
<!--
function MaximizeWindow()
{
var offset = 4; //needs to change accordingly with browsers
window.moveTo(-offset, -offset);
window.resizeTo(screen.availWidth + (2 * offset),
screen.availHeight + (2 * offset));
}
function Button1_onclick() {
MaximizeWindow();
}
//-->
</script>
</head>
<body>
<form id="form1">
<input type="button" value="Show" id="Button1"
name="Button1" onclick="return Button1_onclick()">
</form>
</body>
</html>
This concept is a peculiar case. Can we really maximize a browser window using JavaScript? To which my answer is NO. There exists no direct procedure to maximize a browser window dynamically using JavaScript at all. The best indirect way to achieve the same is to resize the window so that it fits the entire screen!
Let us consider the following function I used in the above code:
function MaximizeWindow()
{
var offset = 4; //needs to change accordingly with browsers
window.moveTo(-offset, -offset);
window.resizeTo(screen.availWidth + (2 * offset),
screen.availHeight + (2 * offset));
}
The above is a simple function which uses an indirect way of maximizing a browser window. I used the “offset” especially to push the border of the browser window a further four pixels to the left and top (mimicking the maximization). But please be aware that some browsers work with the “offset” value as simply zero. I leave it to you.
We can use the “screen” object to determine the width and height of a desktop screen. Based the values I receive from “availWidth” and “availHeight” from the “screen” object, I resize the browser window accordingly.
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