October 2006
Beginner to intermediate
352 pages
9h 33m
English
Content preview from Learning JavaScript
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
The Number Object
The Number object’s unique
methods have to do with conversion—to string, to
locale-specific string, to a given precision- or fixed-point
representation, and to exponential notation. The object also has four
constant numeric properties, directly accessible from the Number object.
Rather than list each Number
object’s methods and properties, Example 4-1
demonstrates how they work by calling each and printing out their
results and/or values.
Example 4-1. The Number object methods
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>The Number Object</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<script type="text/javascript">
//<![CDATA[
// Number properties
document.writeln(Number.MAX_VALUE + "<br />");
document.writeln(Number.MIN_VALUE + "<br />");
document.writeln(Number.NEGATIVE_INFINITY + "<br />");
document.writeln(Number.POSITIVE_INFINITY + "<br />");
// Number specific methods
var newValue = new Number("34.8896");
document.writeln(newValue.toExponential(3) + "<br />");
document.writeln(newValue.toPrecision(3) + "<br />");
document.writeln(newValue.toFixed(6) + "<br />");
//]]>
</script>
</body>
</html>Figure 4-1 shows the results of running this JavaScript application.
Figure 4-1. The Number object methods
In Example 4-1, two numeric ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.