Method getQueryString

function/magic.js:488–495

(url, name)

    }

    getQueryString(url, name) {
        let reg = new RegExp("(^|[&?])" + name + "=([^&]*)(&|$)");
        let r = url.match(reg);
        if (r != null) {
            return unescape(r[2]);
        }
        return '';
    }

    unique(arr) {
        return Array.from(new Set(arr))