JS实现点击事件统计的简单实例

var _clickq = _clickq || [];
_clickq.push(['param1', 'value1']);
var _clickc = {selector:'_click_rps'};
(function() {
 var click = document.createElement("script");
 click.src = "//cache.skye.com/js/lib/stat/click.js";
 var s = document.getElementsByTagName("script")[0]; 
 s.parentNode.insertBefore(click, s);
})();

(function () {
  // 默认参数
  var options = {
    selector: '_click_rp',
    prefix: '_rp_',
    cookie: '_click_rp',
    domain: '.skye.com',
    delay: false,
    delay_attr: '_delay'
  };

  var params = {};
  var _params = {};
  var clickObj = null; // 当前点击对象

  // 获得对象
  var getObject = function(selector) {
    if (typeof(selector) == 'object') {
      return selector;
    } else {
      var obj = $('#'+selector);
      if (obj.length) {
        return obj;
      }
      obj = $('.'+selector);
      if (obj.length) {
        return obj;
      }
      return null;
    }
  }
  // 获得选择器
  var getSelector = function(selector) {
    return '#' + selector + ',.' + selector;
  }
  // 操作cookie函数
  var getCookie = function(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 "";
  }
  var setCookie = function(c_name,value,expiredays,path,domain) {
    var exdate = new Date()
    exdate.setDate(exdate.getDate()+expiredays)
    var cookie = c_name+ "=" +escape(value)+((expiredays==null) "" : ";expires="+exdate.toGMTString());
    if (path) cookie = cookie + ";path=" + path;
    if (domain) cookie = cookie + ";domain=" + domain;
    document.cookie = cookie;
  }

  // 获得标签中的参数
  var getAttrParam = function() {
    if ( clickObj ) {
      var attrs = clickObj.get(0).attributes;
      $.each(attrs, function(i) {
        var name = attrs[i].name;
        if ( name.indexOf(options.prefix) == 0 ) {
          name = name.replace(options.prefix, '');
          var value = attrs[i].value;
          if ( value.indexOf('javascript:') == 0 ) {
            // 执行js获得参数值
            value = value.replace('javascript:', '');
            eval('var valFun = function() {'+ value +'};');
            value = valFun();
          }
          params[name] = value;
        }
      });
    }
  }
  // 获得默认参数
  var getDefaultParam = function() {
    if(document) {
      params.url = document.URL || '';
      params.referrer = document.referrer || '';
    }
    // 时间
    var date = new Date();
    params.ltime = date.getTime() / 1000;

    // 时间戳
    params.t = date.getTime();
  }
  var getParamStr = function() {
    getAttrParam();
    getDefaultParam();
    // 合并配置参数
    for(var key in _params) {
      params[key] = _params[key];
    }
    //拼接参数串
    var args = ''; 
    for(var i in params) {
      if(args != '') {
        args += '&';
      }  
      args += i + '=' + encodeURIComponent(params[i]);
    }
    return args;
  }

  // 清空参数
  var clearParam = function() {
    params = {};
  }

  // 是否立即上报，如果跳转页面，则计入延时上报
  var getIsDelay = function() {
    if ( clickObj ) {
      // 有具体指定
      if ( clickObj.attr(options.delay_attr) == 'true' ) {
        return true;
      }
      // 特定标签
      // a标签
      if ( clickObj.is('a') ) {
        if ( clickObj.attr('href').indexOf('javascript:') == 0 ) {
          return false;
        }
        if ( clickObj.attr('target') && clickObj.attr('target') != '_self' ) {
          return false;
        }
        return true;
      }
      // submit按钮
      if ( (clickObj.is('input') || clickObj.is('button')) && clickObj.attr('type') == 'submit' ) {
        return true;
      }
    }
    return options.delay;
  }
  
  // 加入cookie，下次上报
  var setDelayCookie = function() {
    // 获得参数
    var args = getParamStr();
    var cookieStr = getCookie(options.cookie);
    if ( cookieStr == '' ) {
      cookieStr = args;
    } else {
      cookieStr = cookieStr + ',' + args;
    }
    setCookie(options.cookie, cookieStr, 7, '/', options.domain);
    clearParam();
  }

  // 上报cookie
  var rpCookie = function() {
    // 获得cookie，循环操作
    var cookieStr = getCookie(options.cookie);
    if ( cookieStr ) {
      var cookieArr = cookieStr.split(',');
      for(var key in cookieArr){ 
        rpClick(cookieArr[key]);
      } 
      setCookie(options.cookie, '', 7, '/', options.domain);
    }
  }

  // 上报
  var rpClick = function(args) {
    if ( args == undefined ) {
      args = getParamStr();
    }
    var img = new Image(1, 1);
    img.src = 'http://data.skye.com/stat/click?' + args;
    console.info(img.src);
    clearParam();
  }

  // js上报函数
  var rpComm = function(obj) {
    console.info('click');
    clickObj = obj;
    if ( getIsDelay() ) {
      setDelayCookie();
    } else {
      rpClick();
    }
  }

  //解析外部配置
  if(_clickc) {
    for(var i in _clickc) {
      options[i] = _clickc[i];
    }  
  }
  
  //解析外部参数
  if(_clickq) {
    for(var i in _clickq) {
      _params[_clickq[i][0]] = _clickq[i][1];
    }
  }

  // 提供外部js函数
  $.rpComm = function(obj) {
    rpComm(obj);
  }
  $.fn.rpComm = function() {
    rpComm($(this));
  }

  // cookie中的上报
  rpCookie();

  // 初始化信息
  var _time = new Date().valueOf();
  var selector = getSelector(options.selector);
  $('body').delegate(selector,'click',function() {
    // 连续点击限制
    if(new Date().valueOf() - _time < 300) {
      return;
    }
    _time = new Date().valueOf();
    rpComm($(this));
  });
})();