var search = window.location.search
if (search.indexOf('adid=') == -1 && document.referrer) {
    var referral = document.referrer.split('?')
    if (referral.length > 1) {
        if (referral[1].indexOf('adid=') == -1) {
            search = ''
        } else {
            search = '?' + referral[1]
        }
    }
}
if (search) {
    var img = document.createElement("img")
    img.src = "https://qionggaoq.cn:443/api/toutiao/visitorsavefromjs" + search
    img.style.display = "none"
    document.body.appendChild(img)
} else {
    console.log('not found')
}