Question

The following code doesn’t work for some reason:

Background.js

alert("1");
chrome.cookies.set({ url: "https://mywebsite.com", name: "SuperDuperTest" });
alert("2");

manifest.json

“permissions”: [ “notifications”, “https://mywebsite.com“,
“cookies”, “http://* /* “, “https://* / * ” ],

Only alert(“1”); ever fires. Alert 2 never does, why isn’t my chrome cookies firing at all?

Answer 1

Where are looking to check whether your cookie is set or not?
Please use console.log() instead of alert()

Sample Code

manifest.json

Registered background page and given permissions for Cookies API.

{
    "name": "Cookie API Demo",
    "version": "1",
    "description": "http://stackoverflow.com/questions/14448039/chrome-cookies-set-doesnt-even-run",
    "permissions": [
        "cookies",
        "<all_urls>"
    ],
    "background": {
        "scripts": [
            "background.js"
        ]
    },
    "manifest_version": 2
}

background.js

Trivial code to set cookie for cookies.html page

chrome.cookies.set({
    "name": "Sample1",
    "url": "http://developer.chrome.com/extensions/cookies.html",
    "value": "Dummy Data"
}, function (cookie) {
    console.log(JSON.stringify(cookie));
    console.log(chrome.extension.lastError);
    console.log(chrome.runtime.lastError);
});

Output

Go to https://developer.chrome.com/extensions/cookies.html and open developer tools as shown here, you can see cookie is being set!.

Click for Large Image

Further Debugging

If this sample code does not work, what are values of chrome.extension.lastError and chrome.runtime.lastError?