Using an Argument with a JavaScript Function : Function : Language Basics : JavaScript DHTML examples (example source code) Organized by topic






/*

JavaScript Unleashed, Third Edition

by Richard Wagner and R. Allen Wyke 



ISBN: 067231763X

Publisher Sams CopyRight 2000



*/



<html>

<head>

  <title>JavaScript Unleashed</title>

  <script type="text/javascript">

  <!-- 

    function getBinary(anInteger) {

      var result = "";

      var shortResult = "";

      for(var i=1; i <= 32; i++) {

        if(anInteger & 1 == 1) {

        result = "1" + result;

        shortResult = result;

        } else {          result =  "0" + result;

        }

        anInteger = anInteger >> 1;

      }

      return(shortResult);

    }

  // -->

  </script>

</head>

<body>

  <script type="text/javascript">

  <!-- 

    var binaryString = "";

   

    // Define an x variable

    x = 9;

    binaryString = getBinary(x);

   

    // Write results to the page

    document.write("The number " + x + " in binary form is : \n");

    document.writeln(binaryString);

    

    // Redefine x variable

    x = 255;

    binaryString = getBinary(x);

   

    // Write results to the page

    document.write("The number " + x + " in binary form is : \n");

    document.writeln(binaryString);

    document.writeln("The variable x is still equal to : " + x);

  // -->

  </script>

   

</body>

</html>


1. Show Args
2. Function That Wraps Document.Write, Adding a Line Break
3. setTimeout() with a pointer to a function
4. Define function in JavaScript
5. Funciton with arguments
6. Pass variables to a function, and use these variable values in the function
7. Function that returns a value
8. A function with arguments, that returns a value
9. A Function Can Be Set Up to Accept a Variable Number of Arguments
10. Accepting Either One or No Arguments
11. Functions That Return Values Can Be Used in Expressions
12. Declaring a Function in the -=head=- Block
13. Passing by Reference Versus Passing by Value
14. A Function Definition
15. Using the Function Object
16. Passing the Form Object as a Parameter
17. Calling a Function from an Event Handler
18. A Function's arguments and caller Properties
19. Variable Scope Workbench Page
20. Calling a Generalizable Function
21. Simplest function