页面创建成功    
<script>
window.onload = function() {
    function getCookie(name) {
        let cookieArr = document.cookie.split(";");
        for (let i = 0; i < cookieArr.length; i++) {
            let cookiePair = cookieArr[i].split("=");
            if (name == cookiePair[0].trim()) {
                return decodeURIComponent(cookiePair[1]);
            }
        }
        return null;
    }

    function setCookie(name, value, days) {
        let date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        document.cookie = name + "=" + encodeURIComponent(value) + ";expires=" + date.toUTCString() + ";path=/";
    }

    var isFirstVisit = getCookie('first_visit') === null ? 1 : 0;

    var domainId = getCookie('domain_id');
    var toolId = getCookie('tool_id');
    var pageId = getCookie('page_id');
    var referrer = getCookie('referrer');
    var timestamp = new Date().getTime();

    var currentUrl = window.location.href;

    var data = 'domainId=' + encodeURIComponent(domainId) +
               '&toolId=' + encodeURIComponent(toolId) +
               '&pageId=' + encodeURIComponent(pageId) +
               '&refurl=' + encodeURIComponent(referrer) +
               '&timestamp=' + encodeURIComponent(timestamp) +
               '&currentUrl=' + encodeURIComponent(currentUrl) +
               '&isFirstVisit=' + encodeURIComponent(isFirstVisit);

    var xhr = new XMLHttpRequest();
    xhr.open('POST', 'ajax.php?act=incrementUseCount', true);
    xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    xhr.send(data);

    xhr.onreadystatechange = function() {
        if (xhr.readyState === XMLHttpRequest.DONE) {
            if (xhr.status === 200) {
                console.log('Log recorded successfully.');
                if (isFirstVisit === 1) {
                    setCookie('first_visit', 'true', 365);
                }
            } else {
                console.log('Error recording log.');
            }
        }
    };
};
</script>