javascript BlueKai CoreTag - 每次访问花费的时间，每个会话的页数，一天中的时间

Posted 2021-05-03

/*
Author : [e-mail]
Notes:

- window._bk.functions.time_spent() & window._bk.functions.pages_per_visit() use session cookies stored on the top-level domain, e.g. ".mydomain.com"  or ".mydomain.co.uk" to calculate values

*/


window._bk = window._bk || {};
window._bk.data = window._bk.data || {};
window._bk.functions = window._bk.functions || {};

// DOMAIN GRABBER
window._bk.functions.domainGrabber = function(){

	// Replace www.
	var domain = document.domain.replace('www.','');

	//Detect .xx.xx vs .xxx
	var reverse_domain = domain.split('.').reverse();

	if (reverse_domain[0].length === 2) {
		
		var domain_length = 2;
		var tld = "." + reverse_domain[1] + "." + reverse_domain[0];

	} else if (reverse_domain[0].length === 3){
		
		var domain_length = 1;
		var tld = "." + reverse_domain[0];

	}

	// Create final domain	
	if(domain_length === 2){

		domain = "." + reverse_domain[2] + tld;

	} else if (domain_length === 1){

		domain = "." + reverse_domain[1] + tld;

	}

	return domain;

}

// Cookie Setter
window._bk.functions.cookie_setter = function(cookieName,cookieValue){

	//session cookie
	document.cookie = cookieName + "=" + cookieValue + ";path=/;domain=" + window._bk.functions.domainGrabber() + ";expires=";

};

// Cookie Reader
window._bk.functions.cookie_reader = function(cookieName){
  
  // Get name followed by anything except a semicolon
  var cookiestring=RegExp(""+cookieName+"[^;]+").exec(document.cookie);
  
  // Return everything after the equal sign, or an empty string if the cookie name not found
  return decodeURIComponent(!!cookiestring ? cookiestring.toString().replace(/^[^=]+./,"") : "");

};

// PAGES PER VISIT (set args to do different things)
window._bk.functions.pages_per_visit = function(){
	
	if(!window._bk.functions.cookie_reader("_bk_ppv")){
		
		window._bk.data.ppv = 1;		

	} else if(typeof window._bk.data.ppv === "undefined"){

		window._bk.data.ppv = parseInt(window._bk.functions.cookie_reader("_bk_ppv")) + 1;		

	}

	window._bk.functions.cookie_setter("_bk_ppv",window._bk.data.ppv);

	//Set bandings
	var bandings = [[1],[2,4],[5,10],[11,1000]];

	for (var i = 0; i < bandings.length; i++) {
		
		// Single Length banding
		if(bandings[i].length === 1){

			if(window._bk.data.ppv === bandings[i][0]){

				window._bk.data.ppv_banding = bandings[i][0];

			}

		} else if(window._bk.data.ppv >= bandings[i][0] && window._bk.data.ppv <= bandings[i][1]) {

			window._bk.data.ppv_banding = bandings[i][0] + "-" + bandings[i][1];

		}
	}

	return {
		"ppv":window._bk.data.ppv,
		"ppv_band":window._bk.data.ppv_banding	
	}

};

// TIME OF DAY (set args to do different things)
window._bk.functions.time_of_day = function(){

	_bk.data.hourOfDay = new Date().getHours() + "00";

	return _bk.data.hourOfDay;
};

// TIME SPENT (set args to do different things)
window._bk.functions.time_spent = function(){
	
	var currentTimestamp = parseInt(new Date().valueOf()/1000);

	if(!window._bk.functions.cookie_reader("_bk_vst")){
		
		window._bk.functions.cookie_setter("_bk_vst",currentTimestamp);
		window._bk.data.session_time_s = "n/a - first page view/event";
		window._bk.data.session_time_band = "n/a - first page view/event";

	} else {

		// time bands
		var session_time_bands = [[0,10],[11,30],[60,180],[181,600],[601,1800],[1801,100000]]

		// Calculate Session Time	
		window._bk.data.session_time_s = currentTimestamp - parseInt(window._bk.functions.cookie_reader("_bk_vst"));
		
		// Reset to "n/a - first page view/event" on first PV
		if(window._bk.data.session_time_s === 0){window._bk.data.session_time_s = "n/a - first page view/event"};

		for (var i = 0; i < session_time_bands.length; i++) {

			if(window._bk.data.session_time_s >= session_time_bands[i][0] && window._bk.data.session_time_s <= session_time_bands[i][1]){

				window._bk.data.session_time_band = session_time_bands[i][0] + "-"  + session_time_bands[i][1] + " seconds";

			}
		}
		
	}

	return {
		"ts":window._bk.data.session_time_s,
		"ts_band":window._bk.data.session_time_band
	}

};

// Ensure you use these functions on every call or they may stop working
window._bk.functions.pages_per_visit()
window._bk.functions.time_spent();

// Declare Phints
bk_addPageCtx('page_views_per_visit_seconds', window._bk.functions.pages_per_visit().ppv);
bk_addPageCtx('pages_views_per_visit_band', window._bk.functions.pages_per_visit().ppv_band);

bk_addPageCtx('time_spent_per_visit_seconds', window._bk.functions.time_spent().ts);
bk_addPageCtx('time_spent_per_visit_band', window._bk.functions.time_spent().ts_band);

bk_addPageCtx('hour_of_day', window._bk.functions.time_of_day());