How can I delete all cookies with JavaScript? [duplicate]

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There is no 100% solution to delete browser cookies.

The problem is that cookies are uniquely identified by not just by their key “name” but also their “domain” and “path”.

Without knowing the “domain” and “path” of a cookie, you cannot reliably delete it. This information is not available through JavaScript’s document.cookie. It’s not available through the HTTP Cookie header either!

However, if you know the name, path and domain of a cookie, then you can clear it by setting an empty cookie with an expiry date in the past, for example:

function clearCookie(name, domain, path){
    var domain = domain || document.domain;
    var path = path || "https://stackoverflow.com/";
    document.cookie = name + "=; expires=" + +new Date + "; domain=" + domain + "; path=" + path;
};

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