Uses of the New Window Command for Web Sites - Advanced Usage
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c) Advanced usage of window open
The above examples all require an existing URL. But what if we just want to give the user a simple message? Do we need to create a new HTML file? It seems a little stupid to do such things, right? Okay, let's go ahead with a simple demonstration. When users click a link, it will open a new window with the current date/time displayed.
<html>
<head>
<title>Uses of the New Window command demonstration 2</title>
<script type="text/javascript">
function showDateWin() {
var date = new Date();
var win = window.open('', '_blank', 'width=400, height=100, menubar=no, toolbar=no,
location=no, scrollbars=no, status=no, resizable=no');
win.document.writeln('Current Date Time: ' + date.toUTCString());
}
</script>
</head>
<body>
<h1>window.open() demo2</h1>
<a href="#" onclick="showDateWin();">Show Date</a>
</body>
</html>
Picture 6: open a new window with dynamic content
In the showDateWin() function, we did not specify the URL in the window.open() method, so the browser will open a blank window. Though in the second statement, "win.document.writeln('Current Date Time: ' + date.toUTCString())", we dynamically write some content in the opened window. That's like magic, isn't it?
According to the above examples, we can see that using window.open() to open new windows is very easy and flexible. What's more, it can customize the new window feature. In this way, we can make it a specified size and hide the menu bar, toolbar, etc. to show a neat window.
Conclusion
With the latest XHTML specification, it is not recommended that you use the target attribute of <a> tag or <base> tag because it is not supported. The best way to open a new window is to use JavaScript, which is flexible and powerful. Keep in mind that this method requires the browser to support JavaScript; if the browser is very old or JavaScript is disabled, the links will not work. I think we don't need to worry about that though since modern browsers all support JavaScript and a lot of web 2.0 applications are based on JavaScript already, like Google's GMail.
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