diff --git a/.gitignore b/.gitignore deleted file mode 100644 index e43b0f9..0000000 --- a/.gitignore +++ /dev/null @@ -1 +0,0 @@ -.DS_Store diff --git a/README.textile b/README.textile index ead837b..91f1ce6 100644 --- a/README.textile +++ b/README.textile @@ -2,9 +2,9 @@ h1. Cohorts Cohorts is a simple, purely javascript, multivariate testing framework. -It allows you to easily run split tests for visitors on your site, showing them different designs, layouts, or whatever you want. Cohorts also allows you to track interesting events that occur for each of the cohorts. By default, it uses Google Analytics event tracking to store data, but you can customize it to use your own or another. +It allows you to easily run split tests for visitors on your site, showing them different designs, layouts, or whatever you want. Cohorts also allows you to track interesting events that occur for each of the cohorts. There are examples to use it with Google Analytics and SnowPlow Analytics, but you can easily customize it to store data in any analytics platform. -Note that Cohorts will not do any analysis for you: it's up to you to carefully consider analyze the data gathered to make business decisions. +Note that Cohorts will not do any analysis for you: it's up to you to carefully analyze the data gathered to make business decisions. Since the framework is purely javascript based, it's especially useful if you're working in an environment that has page and fragment caching. @@ -19,44 +19,56 @@ h2. Basic Usage For example, say you want to run a test to determine whether a bigger header link results in more clicks. In your page, you have both big and small header links, and they are not displayed by default. You can setup 2 cohorts like this: 

-    // Note that this example assumes jQuery
-    var header_test = new Cohorts.Test({
-        name: 'big_vs_small_header',
-        sample: 1, // we want to include all visitors in the test
-        cohorts: {
-            big: {
-                onChosen: function() {
-                    $('#big').show();
-                }
-            },
-            small: {
-                onChosen: function() {
-                    $('#small').show();
-                }
+var a_test = new Cohorts.Test({
+    name:'CTA Wave 2',
+    scope:1,
+    varSlot:3,
+    sample:1,
+    urlMatch:[
+        {
+            regex: /.*/i // Run on all pages matching a regular expression of the href (optional)
+        }
+    ],
+    uaBlock:[
+        {
+    	    "ie":[5,6,7,8] // Block troublesome browsers (optional)
+        }
+    ],
+    cookieMatch:[
+        {
+        "cookieName": "value" // Run test only when this cookie value exists (optional)
+        }
+    ],
+    referrerMatch:[
+        "https://www.google.com/", "http://www.bing.com/" // Run test only when the referrer matches (optional)
+    ],
+    cohorts:{
+        "Original":{
+            onChosen: function()
+            {
+                // Do nothing
+            }
+        },
+        "Variation A":{
+            onChosen: function()
+            {
+                $('p.message').html('Yo, test is running!'); // When variation runs, do this 
             }
         }
-    });
-
-    $('#big').click(function() {
-        header_test.event('Clicked on Header');
-    });
-
-    $('#small').click(function() {
-        header_test.event('Clicked on Header');
-    });
-    
+    }
+});
-After running this live on your site, you will see new data in the Event Tracking section of Google Analytics. +After running this on your site, you will see new data in the Event Tracking section of Google Analytics. -There will be a new category called "cohorts", and under that, all your tests will show up as "actions". In this case "big_vs_small_header" will be an action. +There will be a new category called "cohorts", and under that your tests will show up as "actions". In this case "a_test" will be an action. Under each test action, you will see various labels. For this example, you will see the following labels: -* "big | Total" - The total number of people seeing the big header -* "big | Clicked on Header " - The total number of people in the big cohort that clicked on the header -* "small | Total" - The total number of people seeing the small header -* "small | Clicked on Header " - The total number of people in the small cohort that clicked on the header +* "variation_a" - The total number of people seeing "variation_a" +* "variation_a | Clicked on message" - The total number of people in this cohort that converted +* "variation_b" - The total number of people seeing "variation_b" +* "variation_b | Clicked on message" - The total number of people in this cohort that converted From this data, you can determine the effects the design change. @@ -67,6 +79,7 @@ h3. Constructor To initiate the test, create an instance of @Cohorts.Test@, which accepts an options hash with the following keys: * @name@ The name of the test. This needs to be unique. +* @scope@ Whether you want the test to persist at the level of a 1: Visitor, 2: Session, 3: Page (integer 1-3, 1 is recommended) * @sample@ A float from 0 to 1.0 representing the percentage of visitors that should be in the test. For example, if you specify 0.5, only 50% of visitors will be considered to be testable. This is useful if you want to restrict testing to a small percentage of visitors. * @cohorts@ Hash with keys of the names of the cohorts. For the values, you can specify a @onChosen@ function that should be executed as soon as the visitor resolves to that cohort. * @storageAdapter@ An object representing the data store you want to use. More details below. If you don't specify anything, it will defaults to using Google Analytics event tracking. @@ -89,7 +102,9 @@ myStorageAdapter = { // inTest: whether the visitor is in the test // testName: the name of the test // cohort: the cohort chosen for the visitor. Will be null if the visitor isn't in the test - onInitialize: function(inTest, testName, cohort) { + // cv_slot: the custom variable slot the test will occupy for the web analytics tool used + // scope: the scope of the test (whether test/tracking persists at the visitor level [1] or session level [2]) + onInitialize: function(inTest, testName, cohort, cv_slot, scope) { // do initialization stuff }, @@ -110,10 +125,10 @@ h2. Forcing Cohorts It's useful when testing to force yourself into a particular cohort. You can specify a cohort via URL encoded params in a hash, like so: 

-http://www.example.com/page.html#test1=cohort_foo&test2=cohort_bar
+http://www.example.com/page.html#hello-goodbye=hello&test2=cohort
-This would force @test1@ to be in @cohort_foo@ and @test2@ to be in @cohort_bar@. +This would force @test1@ to be in @cohort_foo@ and @test2@ to be in @cohort_bar@. To preview your code in a production environment without exposing visitors to the test, you can just set the sample to 0 while you force particular versions of the page. h2. Details and Notes @@ -125,4 +140,4 @@ You can have multiple tests running on a page, as long as your test names are un h2. TODO -* Ability to specify cookie expiry. \ No newline at end of file +* More examples diff --git a/lib/cohorts.js b/lib/cohorts.js index 5318adf..6a68dbf 100644 --- a/lib/cohorts.js +++ b/lib/cohorts.js @@ -1,483 +1,873 @@ -Cohorts = (function() { +var dataLayer = dataLayer||[{}]; + +Cohorts = (function () { + + // Enable debugging through the console var Options = { - debug: false + debug: true }; - - var GoogleAnalyticsAdapter = { - nameSpace: 'cohorts', - trackEvent: function(category, action, opt_label, opt_value) { - Utils.log('GA trackEvent: ' + category + ', ' + action + ', ' + opt_label + ', ' + opt_value); - - if(window['_gaq']) { - _gaq.push(['_trackEvent', category, action, opt_label, opt_value]); - } else { - throw(" _gaq object not found: It looks like you haven't correctly setup the asynchronous Google Analytics tracking code, and you are using the default GoogleAnalyticsAdapter."); - } - }, - onInitialize: function(inTest, testName, cohort) { - if(inTest) { - this.trackEvent(this.nameSpace, testName, cohort + ' | Total'); - } + + // test scope definition + var TEST_SCOPE = { + USER:"user", + SESSION:"session", + HIT:"hit" + }; + + // target URL match type + var TARGET_URL_MATCH = { + HREF:"href", + PATHNAME:"pathname" + }; + + // By default, Cohorts events are pushed onto a data layer (if one is not defined in the test) + var dataLayerAdapter = { + + nameSpace: 'experiments', + onInitialize: function(inTest, testName, cohort, analyticsSlot, testScope, newToTest) { + + var key = 'testSlot'+analyticsSlot; + var obj = {}; + obj[key] = testName+' '+cohort; + dataLayer.push(obj); + dataLayer.push({ + 'event': 'experiment', + 'nameSpace': this.nameSpace, + 'testName': testName, + 'cohort': cohort, + 'testScope': testScope, + 'newToTest': newToTest + }); + }, onEvent: function(testName, cohort, eventName) { - this.trackEvent(this.nameSpace, testName, cohort + ' | ' + eventName); + dataLayer.push({ + 'event': 'event', + 'eventCategory': this.nameSpace, + 'eventAction': testName, + 'eventLabel': cohort, + 'eventProperty': scope, // this scope variable is undefined now, is this 'onEvent' method is not in use? + 'eventValue': 1, + 'eventNonInt': false + }); + } + }; - + // The main test object - - var Test = (function() { + var Test = (function () { + var cookiePrefix = '_cohorts'; - - var constructor = function(options) { + + var constructor = function (options) { + this.options = Utils.extend({ name: null, cohorts: null, - sample: 1.0, + testScope: TEST_SCOPE.USER, + analyticsSlot: null, + sampleRate: 1.0, storageAdapter: null }, options); - - // Check params - if(this.options.name === null) - throw('A name for this test must be specified'); - if(this.options.cohorts === null) - throw('Cohorts must be specified for this test'); - if(Utils.size(options.cohorts) < 2) - throw('You must specify at least 2 cohorts for a test'); - if(!this.options.storageAdapter) - this.options.storageAdapter = GoogleAnalyticsAdapter; - this.cohorts = Utils.keys(this.options.cohorts); + // Check params + if (this.options.name === null) throw ('A name for this test must be specified'); + if (this.options.cohorts === null) throw ('Cohorts must be specified for this test'); + if (this.cohorts.length < 2) throw ('You must specify at least 2 cohorts for a test'); + if (!this.options.analyticsSlot) this.options.analyticsSlot = 5; + if (!this.options.storageAdapter) this.options.storageAdapter = dataLayerAdapter; + this.run(); + }; - + constructor.prototype = { - run: function() { - // Determine whether there is forcing of cohorts via the URL + + run: function () { + + // Determine whether there is forcing of cohorts via the URL and set the cohort var hash = window.location.hash; - if(hash.indexOf('#') == 0) hash = hash.slice(1,hash.length); + var preview = false; + if (hash.indexOf('#') == 0) hash = hash.slice(1, hash.length); var pairs = hash.split('&'); - for(var i = 0; i < pairs.length; i++) { + for (var i = 0; i < pairs.length; i++) { var pair = pairs[i].split('='); var name = pair[0]; var cohort = pair[1]; - if(this.options.name == name) { + if (this.options.name == name) { Utils.log('Forcing test ' + name + ' into cohort ' + cohort); this.setCohort(cohort); + preview = true; } - } - - // Determine whether user should be in the test + + // Determine whether user should be in the test & they're on a test page var in_test = this.inTest(); - if(in_test === null) // haven't seen this user before - in_test = Math.random() <= this.options.sample; - - if(in_test) { + var isExecutable = this.isExecutable(); + var newToThisTest = false; + var excludeBySample = false; + + if (in_test === null && !isExecutable){ + return; + } + if (in_test === null && isExecutable) { + in_test = Math.random() <= this.options.sampleRate; + if (in_test) + { + newToThisTest = true; + } + else + { + excludeBySample = true; + } + } + + // Visitors selected into the test are assigned a cohort or set to view an existing one + if (in_test || preview) { + + Utils.log("Test Object ["+this.options.name+"] run."); this.setCookie('in_test', 1); - - if(!this.getCohort()) { - // determine which cohort the user is chosen to be in - var partitions = 1.0 / Utils.size(this.options.cohorts); - var chosen_partition = Math.floor(Math.random() / partitions); - var chosen_cohort = Utils.keys(this.options.cohorts)[chosen_partition]; + var chosen_cohort, currentCohort = this.getCohort(); + + if (!currentCohort) { + chosen_cohort = this.chooseCohort(); this.setCohort(chosen_cohort); } else { - var chosen_cohort = this.getCohort(); + // Returning visitors see the same cohort as last time + chosen_cohort = currentCohort; } - this.options.storageAdapter.onInitialize(in_test, this.options.name, chosen_cohort); - - // call the onChosen handler, if it exists - if(this.options.cohorts[chosen_cohort].onChosen) - this.options.cohorts[chosen_cohort].onChosen(); - } else { - this.setCookie('in_test', 0); + + // Track visitors in the test + this.options.storageAdapter.onInitialize(in_test, this.options.name, chosen_cohort, this.options.analyticsSlot, this.options.testScope, newToThisTest); + + // If using redirectTo handler, redirect now to the URL (unless we're already there) + var chosenCohortObject = this.options.cohorts[chosen_cohort]; + if (chosenCohortObject.redirectTo&&isExecutable) + { + var rd = chosenCohortObject.redirectTo; + if (Utils.isFunction(chosenCohortObject.redirectTo)) + { + rd = rd(); + } + + if (rd&&rd.indexOf(window.location.href)<0) + { + window.location.href = rd; + return; + } + } + + // Call the onChosen handler, if it exists and run the contents when we want them to run + // runNow: TRUE Immediately, else we'll execute onChosen when the DOM is ready + if (chosenCohortObject.onChosen&&isExecutable) + { + if (this.options.runNow) + { + Utils.log("Test Object ["+this.options.name+"] cohort onChosen ["+chosen_cohort+"] run."); + chosenCohortObject.onChosen(); + } + else + { + var self = this; + Cohorts.domReady(function(){ + Utils.log("Test Object ["+self.options.name+"] cohort onChosen ["+chosen_cohort+"] run."); + chosenCohortObject.onChosen(); + }); + } + } + } else + { + // For people who were excluded due to sampling, let's exclude them now + if (excludeBySample) this.setCookie('in_test', 0); + } + }, - event: function(eventName) { - if(this.inTest()) - this.options.storageAdapter.onEvent(this.options.name, this.getCohort(), eventName); + event: function (eventName) { + if (this.inTest()) this.options.storageAdapter.onEvent(this.options.name, this.getCohort(), eventName); }, - inTest: function() { - if(this.getCookie('in_test') == 1) { - return true; - } else if(this.getCookie('in_test') == 0) { + /** + * check if a test object is Executable(onChosen and redirect can be performed) + * this method will check 4 options, urlMatch, userAgentExclude, cookieMatch, referrerMatch + * all options must be matched. + * @return {Boolean} + */ + isExecutable:function() + { + var targetURLMatch = this.targetURLMatch(); + if (!targetURLMatch) + { + Utils.log("Test Object ["+this.options.name+"] targetURL not matched."); return false; - } else { - return null; } - }, - inCohort: function(cohort) { - if(this.inTest()) { - return this.getCohort() == cohort; - } else { + + var userAgentExclude = this.options.userAgentExclude?userAgentUtil.match(this.options.userAgentExclude):false; + if (userAgentExclude) + { + Utils.log("Test Object ["+this.options.name+"] user agent blocked."); + return false; + } + + var cookieMatch = this.cookieMatch(); + if (!cookieMatch) + { + Utils.log("Test Object ["+this.options.name+"] cookie not matched."); + return false; + } + + var referrerMatch = this.referrerMatch(); + if (!referrerMatch) + { + Utils.log("Test Object ["+this.options.name+"] referrer not matched."); return false; } + + return true; + }, + /** + * check if current page url matched the test object targetURL option(url split feature) + * targetURL is an array of url items + * you can specify it like this: + * targetURL: [/test1.html/i, /test2.html/i], that means, the test object will run in test1.html or test2.html + * or targetURL:[ + * { + * expression: /gclid=/i, + * match:"pathname" ("href"--expression will apply for document.location.href, "pathname"--expression will apply for document.location.pathname) + * } + * ],that means the regex will apply for document.location.pathname + * @return {Boolean} + */ + targetURLMatch: function() + { + var urlRegexes = this.options.targetURL; + var urlMatch = false; + + if (!urlRegexes) return true; + if (urlRegexes.length <=0) return true; + + for (var i= 0,c=urlRegexes.length;i= 0 ? tv : undefined; + this.mac = dav.indexOf("Macintosh") >= 0; + this.ios = /iPhone|iPod|iPad/.test(dua); + this.android = parseFloat(dua.split("Android ")[1]) || undefined; + this.bb = (dua.indexOf("BlackBerry") >= 0 || dua.indexOf("BB10") >=0)?parseFloat(dua.split("Version/")[1]) || undefined:undefined; - else if( typeof value !== 'string' ) + this.chrome = parseFloat(dua.split("Chrome/")[1]) || undefined; + this.safari = dav.indexOf("Safari")>=0 && !this.chrome ? parseFloat(dav.split("Version/")[1]) : undefined; + + if (this.chrome) this.chrome = Math.floor(this.chrome); + if (this.safari) this.safari = Math.floor(this.safari); + if (this.bb) this.bb = Math.floor(this.bb); + + if (!this.webkit) { - if( typeof JSON === 'object' && JSON !== null && typeof JSON.stringify === 'function' ) + if (dua.indexOf("Opera") >= 0) { - value = JSON.stringify( value ); + this.opera = tv >= 9.8 ? parseFloat(dua.split("Version/")[1]) || tv : tv; + this.opera = Math.floor(this.opera); } - else + + if (dua.indexOf("Gecko") >= 0 && !this.khtml && !this.webkit) { - throw new Error( 'cookies.set() received non-string value and could not serialize.' ); + this.mozilla = tv; } - } + if (this.mozilla) + { + this.ff = parseFloat(dua.split("Firefox/")[1] || dua.split("Minefield/")[1]) || undefined; + if (this.ff) this.ff = Math.floor(this.ff); + } - var optionsString = assembleOptionsString( options ); + if (document.all && !this.opera) + { + var isIE = parseFloat(dav.split("MSIE ")[1]) || undefined; - document.cookie = cookieName + '=' + encodeURIComponent( value ) + optionsString; - }; - /** - * del - delete a cookie (domain and path options must match those with which the cookie was set; this is really an alias for set() with parameters simplified for this use) - * - * @access public - * @paramater MIxed cookieName - String name of cookie to delete, or Bool true to delete all - * @paramater Object options - optional list of cookie options to specify ( path, domain ) - * @return void - */ - constructor.prototype.del = function( cookieName, options ) - { - var allCookies = {}, name; + var mode = document.documentMode; + if (mode && mode != 5 && Math.floor(isIE) != mode) + { + isIE = mode; + } - if( typeof options !== 'object' || options === null ) - { - options = {}; + this.ie = isIE; + } } - if( typeof cookieName === 'boolean' && cookieName === true ) - { - allCookies = this.get(); - } - else if( typeof cookieName === 'string' ) + if (dua.match(/(iPhone|iPod|iPad)/)) { - allCookies[cookieName] = true; + var p = RegExp.$1.replace(/P/, 'p'); + var v = dua.match(/OS ([\d_]+)/) ? RegExp.$1 : "1"; + var os = parseFloat(v.replace(/_/, '.').replace(/_/g, '')); + this[p] = os; } - for( name in allCookies ) - { - if( typeof name === 'string' && name !== '' ) - { - this.set( name, null, options ); - } - } - }; + this.initialized = true; + }, /** - * test - test whether the browser is accepting cookies - * - * @access public - * @return Boolean + * test if current browser's user agent matched the test object userAgentExclude options + * @param tua test object userAgentExclude option, it's an array of ua items, + * you can specify it like this: + * userAgentExclude:["ie", "chrome"], that means test object will run on ie and chrome + * userAgentExclude:[{ie:[9, 10]}, {chrome:[25, 26]}] that means test object will run on ie9, ie10, chrome25, chrome26 + * support ua names, ie, ff, chrome, safari, opera + * we can also specify it by platforms like ios, android + * support platform names, ios, android, bb + * @return {Boolean}, true -- matched, false -- not matched. */ - constructor.prototype.test = function() + match: function(tua) { - var returnValue = false, testName = 'cT', testValue = 'data'; + if (!this.initialized) this.init(); + if (!tua) return false; + if (tua.length <=0) return false; - this.set( testName, testValue ); + var ret = true; - if( this.get( testName ) === testValue ) + for (var i= 0,c=tua.length;i= 0 ? tv : undefined; + this.mac = dav.indexOf("Macintosh") >= 0; + this.ios = /iPhone|iPod|iPad/.test(dua); + this.android = parseFloat(dua.split("Android ")[1]) || undefined; + this.bb = (dua.indexOf("BlackBerry") >= 0 || dua.indexOf("BB10") >=0)?parseFloat(dua.split("Version/")[1]) || undefined:undefined; + + this.chrome = parseFloat(dua.split("Chrome/")[1]) || undefined; + this.safari = dav.indexOf("Safari")>=0 && !this.chrome ? parseFloat(dav.split("Version/")[1]) : undefined; + + if (this.chrome) this.chrome = Math.floor(this.chrome); + if (this.safari) this.safari = Math.floor(this.safari); + if (this.bb) this.bb = Math.floor(this.bb); + + if (!this.webkit) + { + if (dua.indexOf("Opera") >= 0) + { + this.opera = tv >= 9.8 ? parseFloat(dua.split("Version/")[1]) || tv : tv; + this.opera = Math.floor(this.opera); + } + + if (dua.indexOf("Gecko") >= 0 && !this.khtml && !this.webkit) + { + this.mozilla = tv; + } + if (this.mozilla) + { + this.ff = parseFloat(dua.split("Firefox/")[1] || dua.split("Minefield/")[1]) || undefined; + + if (this.ff) this.ff = Math.floor(this.ff); + } + + if (document.all && !this.opera) + { + var isIE = parseFloat(dav.split("MSIE ")[1]) || undefined; + + var mode = document.documentMode; + if (mode && mode != 5 && Math.floor(isIE) != mode) + { + isIE = mode; + } + + this.ie = isIE; + } + } + + if (dua.match(/(iPhone|iPod|iPad)/)) + { + var p = RegExp.$1.replace(/P/, 'p'); + var v = ua.match(/OS ([\d_]+)/) ? 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- This is a big header -

- -

- This is a small header -

- - - - - \ No newline at end of file + + + + + + + + + +

Testing

+

+

For more information on how this works, check out the Readme.

+ + diff --git a/test/test_storageAdapter.html b/test/test_storageAdapter.html index 5d39165..5eb0790 100644 --- a/test/test_storageAdapter.html +++ b/test/test_storageAdapter.html @@ -1,77 +1,68 @@ + - - - Cohorts Test with StorageAdapter - - - - - -

- This is a big header -

- -

- This is a small header -

- - - - - \ No newline at end of file + + + + + + +

Testing

+

+

For more information on how this works, check out the Readme.

+ +