JAVASCRIPT

The Power of Javascript: Operators continued

In the last article we talked about some of the unary and binary operators available in Javascript, namely the arithmetic operators, the comparison operators and the increment/decrement operators. In this article we continue our discussion of the Javascript operators; we will discuss how computers represent data, and bitwise operators.

Author Info:

By: Michael Youssef

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July 26, 2005

TABLE OF CONTENTS:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>Hello World</title>
    <script language="JavaScript" type="text/javascript">
      // x represented in binary as 00000101
      var x = 5;
      // y represented in binary as 00001001
      var y = 9;
      result = x & y;
      document.write(result + "<br>");
      result = x | y;
      document.write(result + "<br>");
      result = x ^ y;
      document.write(result + "<br>");
      result = ~4294967292;
      document.write(result + "<br>");
      result = y << 2;
      document.write(result + "<br>");
      result = y >> 2;
      document.write(result + "<br>");
    </script>
</head>
<body>
</body>
</html>

When you load this file into your browser you will get the following values:

There's nothing special about this example because we have explained the bitwise operators in the above section. As I said before, the bitwise operators do not have much use in Javascript when you program in the browser, but it's part of the language and we should understand what these operators do. Next, we discuss the assignment operators.

Next: Assignment Operators >>