Javascript set then display a cookie value
Question
My problem seems to be easy but I can't make it work; I want to set a cookie variable called "splash" then display it (later I want use in IF clause) Here is my code :
<html>
<head>
<script type="text/javascript">
document.cookie = "splash=" + encodeURIComponent("blue theme")
var re = new RegExp(splash + "=([^;]+)");
var value = re.exec(document.cookie);
alert(value);
</script>
</head>
<body>
</body>
</html>
2 answers
solution1
1 2015-07-20 13:48:43
You should change your regex to include splash as part of the quoted string. Even though spash is the variable you're using in the cookie, it does not automatically become a javascript variable.
document.cookie = "splash=" + encodeURIComponent("blue theme")
var re = new RegExp("splash=([^;]+)");
var theme = re.exec(document.cookie)[1];
re.exec returns an array. the first element is the entire matched string (including splash= ). The second is your capture group ( blue%20theme ).
solution2
0 ACCPTED 2015-07-20 13:51:02
Use Following function to set and get Cookie
function createCookie(name, value, days)
{
if(days)
{
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
}
else
{
var expires = "";
}
var fixedName = '';
name = fixedName + name;
document.cookie = name + "=" + value + expires + "; path=/";
}
function getCookie(name)
{
var value = "; " + document.cookie;
var parts = value.split("; " + name + "=");
if (parts.length == 2) return parts.pop().split(";").shift();
}
function eraseCookie(name)
{
createCookie(name, "", -1);
}
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