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JavaScript popup window

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In this video we will discuss, how to open a popup window using JavaScript.



To open a popup window, use window.open() method. All the parameters are optional.
window.open(URL, name, features, replace)

javascript window.open

No parameters are passed to window.open() method. Since URL is not specified, a new window with about:blank will be opened.
<input type="button" value="Open popup" onclick="window.open()" />

Most modern browsers open new tabs instead of separate windows. If you want to open the popup in a new window, one workaround I have found is to specify the URL, name, and features(height and width) parameters. This may not work in all browsers and it also depends on user's browser preferences.
<input type="button" value="Open popup" onclick="window.open('http://google.com', '_blank', 'height=200,width=200')" />

When name parameter is set to _self, the new window replaces the current window
<input type="button" value="Open popup"
       onclick="window.open('http://google.com', '_self')" />

Specify where you want the new popup window to be positioned using top and left features.
<input type="button" value="Open popup" onclick="window.open('http://google.com', 'My Window', 'height=300,width=300, top=400, left=400')" />

Disable scrollbars and resizing. Works in IE but not in Chrome.
<input type="button" value="Open popup" onclick="window.open('http://google.com', 'My Window', 'height=300,width=300, scrollbars=no, resizable=no')" />

To close pouup use window.close() method.
<input type="button" value="Open popup" onclick="openPopup()" />
<input type="button" value="Close popup" onclick="closePopup()" />
<script type="text/javascript">
    var popup;
    function openPopup()
    {
        popup = window.open("http://google.com", "My Window", "height=300,width=300")
    }

    function closePopup()
    {
        popup.close();
    }
</script>

JavaScript tutorial

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