The Problem:
The client had a popup window for news and announcements that displayed each time the index page was loaded. The client wanted to the popup to only be displayed the first time the index page was called.
The Solution:
I wrote a Javascript that tested for a cookie each time the page was loaded. If the cookie had been set nothing happens. If the cookie is not set the code sets the cookie and displays the popup.
Here is the code:
// ++++++++++++++++++++++++++++++++++++++++++
// Run Once Per Session
//
// Replace the alerts by functions that need to
// be run once per session.
//
// Written by: Michael Regan
// Website : www.owt4nowt.ca
//
// Released under the GPL.
// ++++++++++++++++++++++++++++++++++++++++++
var key_value = "myTestCookie=true";
var foundCookie = 0;
// Get all the cookies from this site and store in an array
var cookieArray = document.cookie.split(';');
// Walk through the array
for(var i=0;i < cookieArray.length;i++)
{
var checkCookie = cookieArray[i];
// Remove any leading spaces
while (checkCookie.charAt(0)==' ')
{
checkCookie = checkCookie.substring(1,checkCookie.length);
}
// Look for cookie set by key_value
if (checkCookie.indexOf(key_value) == 0)
{
alert("Found Cookie ");
// The cookie was found so set the variable
foundCookie = 1;
}
}
// Check if a cookie has been found
if ( foundCookie == 0)
{
// The key_value cookie was not found so set it now
document.cookie = key_value;
alert("Setting Cookie");
}
