JavaScript and Ajax for the Web: Visual QuickStart Guide, Seventh Edition

Handling Multiple Cookies

You will often want to deal with more than one cookie at a time, and Script 10.8 shows you how to read from more than one cookie and display the information. This example shares a fair amount of code with the “Using Cookies as Counters” example.

To handle multiple cookies:

1.	var lastVisit = cookieVal("pageVisit"); We start off by looking for a cookie named pageVisit by passing that string to the cookieVal() function. It returns a value, which is then stored in lastVisit.
2.	if (lastVisit == 0) { lastVisit = ""; } If the value of lastVisit is zero, then put a null value into lastVisit. We now know the user has never been here before. Script 10.8. Use an array to deal with multiple cookies in a single script. window.onload ...