string ,function, arrays and object.
1.W3C DOM support.
2.Object and Class.
1.Low ranking in search engine result page.
2.Development depend on the browser support.
<title>This is Java Script Example</title>
alert(“This is an alert box”);
<p><b>click here to run your java script example</b></p>
Now , enjoy your first java script function. I will be back soon with some more function ,keep visiting.