Javascript accurate statistics of website visits example code_javascript skills

Websites generally have traffic statistics tools. There are many efficient and practical tools, and they are very accurate. Practical JavaScript can also simply implement this function. Although it is not as accurate as commonly used on the Internet, it does achieve certain functions. Here is a code example. Interested friends can refer to it:

<script type="text/javascript">
/**
* vlstat 浏览器统计脚本
*/
var statIdName = "vlstatId";
var xmlHttp;
/**
* 设置cookieId
*/
function setCookie(c_name, value, expiredays) {
  var exdate = new Date();
  exdate.setDate(exdate.getDate() + expiredays);
  document.cookie = c_name + "=" + escape(value) + ((expiredays == null) &#63; "" : ";expires=" + exdate.toGMTString()) + ";path=/;domain=cecb2b.com";
}
/**
* 获取cookieId
*/
function getCookie(c_name) {
  if (document.cookie.length > 0) {
    c_start = document.cookie.indexOf(c_name + "=");
    if (c_start != -1) {
      c_start = c_start + c_name.length + 1;
      c_end = document.cookie.indexOf(";", c_start);
      if (c_end == -1) {
        c_end = document.cookie.length;
      }
      return unescape(document.cookie.substring(c_start, c_end));
    }
  }
  return "";
}
/**
* 获取当前时间戳
*/
function getTimestamp() {
  var timestamp = Date.parse(new Date());
  return timestamp;
}
/**
* 生成statId
*/
function genStatId() {
  var cookieId = getTimestamp();
  cookieId = "vlstat" + "-" + cookieId + "-" + Math.round(Math.random() * 3000000000);
  return cookieId;
}
/**
* 设置StatId
*/
function setStatId() {
  var cookieId = genStatId();
  setCookie(statIdName, cookieId, 365);
}
/**
* 获取StatId
*/
function getStatId() {
  var statId = getCookie(statIdName);
  if (statId != null && statId.length > 0) {
    return statId;
  } else {
    setStatId();
    return getStatId();
  }
}
/**
* 获取UA
*/
function getUA() {
  var ua = navigator.userAgent;
  if (ua.length > 250) {
    ua = ua.substring(0, 250);
  }
  return ua;
}
/**
* 获取浏览器类型
*/
function getBrower() {
  var ua = getUA();
  if (ua.indexOf("Maxthon") != -1) {
    return "Maxthon";
  } else if (ua.indexOf("MSIE") != -1) {
    return "MSIE";
  } else if (ua.indexOf("Firefox") != -1) {
    return "Firefox";
  } else if (ua.indexOf("Chrome") != -1) {
    return "Chrome";
  } else if (ua.indexOf("Opera") != -1) {
    return "Opera";
  } else if (ua.indexOf("Safari") != -1) {
    return "Safari";
  } else {
    return "ot";
  }
}
/**
* 获取浏览器语言
*/
function getBrowerLanguage() {
  var lang = navigator.browserLanguage;
  return lang != null && lang.length > 0 &#63; lang : "";
}
/**
* 获取操作系统
*/
function getPlatform() {
  return navigator.platform;
}
/**
* 获取页面title
*/
function getPageTitle() {
  return document.title;
}
/**
* 创建一个form
* 
* @return
*/
function createSubmitForm() {
  var frm = document.createElement("form");
  document.body.appendChild(frm);
  frm.method = "POST";
  return frm;
}
/**
* 为form创建一个元素
* 
* @param inputForm
* @param elementName
* @param elementValue
* @return
*/
function createFormElement(frmInput, elementName, elementValue) {
  var element = document.createElement("input");
  element.setAttribute("id", elementName);
  element.setAttribute("name", elementName);
  element.setAttribute("type", "hidden");
  element.setAttribute("value", elementValue);
  frmInput.appendChild(element);
  return element;
}
/**
* 构造XMLHttpRequest对象
* 
* @return
*/
function createXMLHttpRequest() { 
if (window.ActiveXObject) { 
 xmlHttp = new ActiveXObject('Microsoft.XMLHTTP'); 
} else if (window.XMLHttpRequest) { 
 xmlHttp = new XMLHttpRequest(); 
} 
}
/**
* url指定跳转页,data是要post的数据。func类似于函数指针
* 
* @param url
* @param data
* @param func
* @return
*/
function AjaxPost(url, data, func) {
  var httpRequest = createHttpRequest();
  if (httpRequest) {
    httpRequest.open("POST", url, true);
    httpRequest.setRequestHeader("content-length", data.length);
    httpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    httpRequest.send(data);
    httpRequest.onreadystatechange = function() {
      if (httpRequest.readyState == 4) {
        try {
          if (httpRequest.status == 200) {
            if (func) {
              // 这里可以调用想要的函数
              func(httpRequest.responseText);
            }
          }
        } catch (e) {
          alert("Error XMLHttpRequest!");
        }
      }
    }
  } else {
    alert("Error initializing XMLHttpRequest!");
  }
}
function vlstatInitLE(vlch, vlch1, vlch2, vlch3) {
  var p;
  var vlstatCH = vlch != null && vlch.length > 0 &#63; vlch : "";
  var vlstatCH1 = vlch1 != null && vlch1.length > 0 &#63; vlch1 : "";
  var vlstatCH2 = vlch2 != null && vlch2.length > 0 &#63; vlch2 : "";
  var vlstatCH3 = vlch3 != null && vlch3.length > 0 &#63; vlch3 : "";
  var vlstatCookieId = getStatId();
  var vlstatUA = encodeURIComponent(getUA());
  var vlstatIPAddress = document.localName;
  var vlstatREFURL = encodeURIComponent(document.referrer);
  var vlstatURL = encodeURIComponent(document.URL);
  var vlstatScreenX = screen.width;
  var vlstatScreenY = screen.height;
  var vlstatOS = getPlatform();
  var vlstatBrower = getBrower();
  var vlstatBrowerLanguage = getBrowerLanguage();
  var vlstatPageTitle = encodeURIComponent(getPageTitle());
  var vlstatAction = "index.php";
  p = "cookieId=" + vlstatCookieId + "&ua=" + vlstatUA + "&ip=" + vlstatIPAddress + "&refurl="
      + vlstatREFURL + "&url=" + vlstatURL + "&screenX=" + vlstatScreenX + "&screenY=" + vlstatScreenY
      + "&os=" + vlstatOS + "&brower=" + vlstatBrower + "&browerLang=" + vlstatBrowerLanguage
      + "&title=" + vlstatPageTitle + "&ch=" + vlstatCH + "&ch1=" + vlstatCH1 + "&ch2=" + vlstatCH2
      + "&ch3=" + vlstatCH3;
  var urlGo = vlstatAction + "&#63;" + p;
  createXMLHttpRequest();
xmlHttp.open('GET', urlGo);
xmlHttp.send(null);
}
</script>

I hope this article will be helpful to everyone learning JavaScript programming.