The floor() method rounds a number DOWNWARDS to the nearest integer, and returns the result.
If the passed argument is an integer, the value will not be rounded.
First, make an HTML file with a name like program.html:
<html>
<head>
<title>
Java Script Web Site
</title>
</head>
<body>
<pre><script src="script.js">
</script></pre>
</body>
</html>
Then, make a file in the same directory with a name like script.js:
function convertion(value){
var convert=Math.floor(value);
document.writeln("<b>floor Value Convert into integre:</b> <h1>"+ convert+"</h1>");
}
convertion(19.6);