URL Parameters transformation

urlTransformation.js

const objectToString = (o) => {
    return Object.keys(o)
        .map((k) => `${encodeURIComponent(k)}=${encodeURIComponent(o[k])}`)
        .join('&');
};

const obj = {foo: "bar", abc: "xyz", name: "John Doe"};
const str = objectToString(obj);
console.log(str); // foo=bar&abc=xyz&name=John%20Doe


// ----
const stringToObject = (s) => {
    return s
        .split('&')
        .map((o) =>
            o.split('=').reduce((k, v) => ({
                [decodeURIComponent(k)]: decodeURIComponent(v),
            }))
        )
        .reduce((a, b) => ({ ...a, ...b }));
};

const obj2 = stringToObject(str);
console.log(obj2); // {foo: "bar", abc: "xyz", name: "John Doe"}