capturing a specific value from a cookie javascript

Question

I have a cookie set up which has data stored in the following format:

{"g":"776","f":"88876","hit":"true","TESTVALUE":"this is the value i want to capture"}

I want to capture "TESTVALUE" in its own variable.

I am using this script to actually capture the cookie data (where the cookie is called "chocolateChip":

var getCookie = function (name) {
    var re = new RegExp(name + "=([^;]+)");
    var value = re.exec(document.cookie);
    return (value != null) ? unescape(value[1]) : null;
} // code indentation

var cookie = getCookie(chocolateChip);

Im then using the following script to pass the "testvalue" string to its own variable:

var test = cookie.TESTVALUE;

However this does not seem to work.

HaukurHaf · Accepted Answer · 2015-06-01 13:35:49Z

2

The cookie value is a JSON string, which you need to parse to get an actual JS object.

Try this:

var cookie = getCookie(chocolateChip);
var test = JSON.parse(cookie).TESTVALUE;

Or, if you need to access more properties:

var cookie = getCookie(chocolateChip);
var cookieObject = JSON.parse(cookie);
var testValue = cookieObject.TESTVALUE;

answered Jun 1, 2015 at 13:35

HaukurHaf

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