The Length of an Array
Earlier, you read that the length of an array is hidden away within the property length. length is a property of the array, and though it may be hidden, it isn't beyond your reach.
To find out how many elements are in the days_of_week array, you can use the following:
days_of_week.length
In the following example, an alert box is used to show this value:
<html> <head> <title>A Simple Page</title> <script language="JavaScript"> <!-- Cloaking device on! var days_of_week = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"); alert(days_of_week.length); // Cloaking device off --> </script> </head> <body> </body> </html>
The output from this example is shown in Figure 5.5.
Figure 5.5. Alert box ...
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