Convert URL GET parameters to Javascript Object & back to URL params (used to remove duplicated when forming URL)

urlParser.js

function getCombineGetParams(url1, url2) {
    let keyValue = [];
    let url1Params = new URLSearchParams(url1);
    url1Params.forEach(function (value, key) {
        keyValue[key] = value;
    });
    let url2params = new URLSearchParams(url2);
    url2params.forEach(function (value, key) {
        keyValue[key] = value;
    });
    return keyValue;
}

function getUrlFromParams(params) {
    let url = [];
    for (const [key, value] of Object.entries(params)) {
        url.push(key + '=' + value);
    }
    return '?' + url.join('&');
}