js 实现解析和构造Url参数

// 解析获取的 url 中的参数为对象
function parseQueryString(url) {
    if (!url) {
        return {};
    }
    const qsArr = decodeURIComponent(url).split("?")[1].split("&");
    return qsArr.reduce((a, b) => {
        const [key, val] = b.split("=");
        a[key] = val;
        return a;
    }, {});
}
console.log(parseQueryString("http://www.xxx.com/d?a=&b=1&c"));

// 解析对象为参数格式
function queryString(params = {}) {
    const data = Object.entries(params);
    const qs = data
        .map(([k, v]) => {
            let noVal = false;
            let isObject = false;
            if (!v) {
                noVal = true;
            }
            if (v instanceof Object) {
                isObject = true;
            }
            isObject = true;
            return `${encodeURIComponent(k)}=${
                noVal ? "" : isObject ? JSON.stringify(v) : v
            }`;
        })
        .join("&");
    return qs;
}
console.log(
    queryString({
        f: [1, 2, 3],
        e: { a: 1 },
        a: 1,
        b: undefined,
        c: null,
        d: "",
        orgId: "1",
        to: "1661615999000",
        name: "a",
    })
);