Search array of string keys for matching variable and return all values using javascript / jquery

Question

I am building an ecommerce application, part of which creates a cookie when the user adds products to a basket (US English: please read 'cart'). The application's logic often generates multiple baskets (and therefore multiple cookies) per user. Each cookie is given a key, which always begins with the string 'basket' following by an ascending integer. Each basket is given an id, which is a 32 character string, stored as the cookie's value.

Within the cookies, the user's basket ids are stored as strings, each with a name / value pair. I have managed to push all of the cookie name / value pairs into an array, such that the array reads:

["mcart=537244a1377f97374fff2233cdc29bdf", " mtoken=0f9a74b73d2f29b1c6088d63b7f4f4a5c545bbe9", " mexpires=1468626166000", " basket1=aw7j0r9ke3hq8tp20egf7105dozfn13i", " basket2=kpxpdnw6nnfyvawmk7n4s7pd9meaimy7", " basket3=9264k594wi9vgfiotkvz323n35yfvkkf"]

I have created a variable:

var name = 'basket';

My aim is to use javascript (presumably regex), or indeed jquery, to:

return the values for the key/value pairs with keys matching 'basket1', 'basket2' and 'basket3' (please note the extra space in the keys which directly follows the opening quotation marks);
continue to match and return values for future key/value pairs created (e.g. 'basket4', 'basket5', 'basket91');
- return said values in an javascript array.

THANK YOU in advance to the community.

Can you give an example of what you expect the output to be for the above array? Is it an array like `["aw7j...", "kpxp...", ...]`? — user94559, Jul 15 '16 at 23:42
Possible duplicate of [How do I set/unset cookie with jQuery?](http://stackoverflow.com/questions/1458724/how-do-i-set-unset-cookie-with-jquery) — imtheman, Jul 15 '16 at 23:44
Hi! Sure. I would like the array to be exactly as you have described. Thanks! — jonhendrix, Jul 15 '16 at 23:47

user94559 · Accepted Answer · 2016-07-15T23:53:00.233

var cookies = ["mcart=537244a1377f97374fff2233cdc29bdf", " mtoken=0f9a74b73d2f29b1c6088d63b7f4f4a5c545bbe9", " mexpires=1468626166000", " basket1=aw7j0r9ke3hq8tp20egf7105dozfn13i", " basket2=kpxpdnw6nnfyvawmk7n4s7pd9meaimy7", " basket3=9264k594wi9vgfiotkvz323n35yfvkkf"];

var baskets = [];

for (var i = 0; i < cookies.length; i++) {
    var match = cookies[i].match(/basket\d+=(.*)/);
    if (match) {
        baskets.push(match[1]);
    }
}

console.log(baskets);

// Output:
// [ 'aw7j0r9ke3hq8tp20egf7105dozfn13i',
//   'kpxpdnw6nnfyvawmk7n4s7pd9meaimy7',
//   '9264k594wi9vgfiotkvz323n35yfvkkf' ]

...erm. Wow!. Thank you. Blown away. Works perfectly. – jonhendrix Jul 15 '16 at 23:55 — jonhendrix, Jul 15 '16 at 23:55

Search array of string keys for matching variable and return all values using javascript / jquery

1 Answers1