Lab 9: Functions in JavaScript

Take a javascript that you have written or a javascript discussed in class and modify it so that it uses a function. For example, the script that loops through pictures of animals could be modified so that when the "Next" button is pressed, a function is called. This would require taking the statements that are currently in the event handler and moving them into a function.

Write a function that converts a temperature from Fahrenheit to Celsius. To convert from F to C you need to subtract 32 and then multiply by 5/9. If you would like, start with the following program given below. Note that the function for this program will require a return value and a single parameter.

<html> 
<head>    
<title> Temperature Conversion </title> 
<script language=javascript type="text/javascript">  

     PUT FUNCTION HERE

</script>
</head> 
<body>  
<h1> Temperature Conversion </h1>
<FORM name = "myform">
<p><input type="text" name="tempF"> temperature in degrees Fahrenheit
<p><input type="text" name="tempC"> temperature in degrees Celsius
<p><INPUT TYPE="button" VALUE="Convert F to C"     
       onClick="tempC.value=convertTemp(tempF.value)">
</FORM>
</body> 
</html>

Write a function that takes a card number (0-51) and prints out the name of the card. Before doing this, study the script in the notes called A More Complicated Card Program. You can use this script as a starting point but you will need to add in all of the cards so you have more than just the clubs. The card images are stored in our lab directory L:\classes\cs130-or\cards.

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