How to delete a value from a existing cookie

Question

I have a add button which adds product id to the cart, which is handled by adding product id to the cookie separated by a pipe. Now on the cart page i have a remove button which should delete that particular product id from the cart which means the product id should be deleted from the cookie.

Ex: cookie value '22343|66562|88767'

when i cilck remove button on id 22343, the updated cookie value should be '66562|88767'

How can i achieve this using javascript.

Hi look here https://stackoverflow.com/questions/2144386/how-to-delete-a-cookie — Bosco, Jun 22 '19 at 18:41
Possible duplicate of [How to delete a cookie?](https://stackoverflow.com/questions/2144386/how-to-delete-a-cookie) — ehymel, Jun 22 '19 at 19:00

score 0 · Answer 1 · edited Jun 23 '19 at 03:58

0

you can always update your cookie

document.cookie = "id=22343|66562|88767'"; // Create 'id' cookie
document.cookie = "id=66562|88767"; // Update the id cookie, i.e. overwrite

Further, if you want to delete, you expire the cookie

Read more at https://developer.mozilla.org/en-US/docs/Web/API/document/cookie

edited Jun 23 '19 at 03:58

Bosco

1,536
2
13
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answered Jun 22 '19 at 18:44

TheWizardJS

151
9

score 0 · Answer 2 · edited Jun 23 '19 at 02:14

function setCookie(name, value, days) {
    var expires = "";
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        expires = "; expires=" + date.toUTCString();
    }
    document.cookie = name + "=" + (value || "") + expires + "; path=/";
}

function getCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    if (ca === null) return "";
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) === ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) === 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}


function eraseCookie(name) {
document.cookie = name + '=; Max-Age=-99999999;' }

How to delete a value from a existing cookie

2 Answers2