update changelog and snippet

Author: Daniel Jih

CHANGELOG.md

@@ -1,5 +1,8 @@
 ## Unreleased
 
+* Add support for logging events to multiple Amplitude apps. **Note this is a major update, and may break backwards compatability.** See [Readme](https://github.com/amplitude/Amplitude-Javascript#300-update-and-logging-events-to-multiple-amplitude-apps) for details.
+* Init callback now passes the Amplitude instance as an argument to the callback function.
+
 ### 2.12.1 (April 21, 2016)
 
 * Silence console warnings for various UTM property keys with undefined values.

README.md

@@ -11,16 +11,18 @@ This Readme will guide you through using Amplitude's Javascript SDK to track use
 
     ```html
         <script type="text/javascript">
-          (function(e,t){var n=e.amplitude||{_q:[]};var r=t.createElement("script");r.type="text/javascript";
+          (function(e,t){var n=e.amplitude||{_q:[],_iq:{}};var r=t.createElement("script");r.type="text/javascript";
           r.async=true;r.src="https://d24n15hnbwhuhn.cloudfront.net/libs/amplitude-2.12.1-min.gz.js";
-          r.onload=function(){e.amplitude.runQueuedFunctions()};var s=t.getElementsByTagName("script")[0];
-          s.parentNode.insertBefore(r,s);function i(e,t){e.prototype[t]=function(){this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
+          r.onload=function(){e.amplitude.runQueuedFunctions()};var i=t.getElementsByTagName("script")[0];
+          i.parentNode.insertBefore(r,i);function s(e,t){e.prototype[t]=function(){this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
           return this}}var o=function(){this._q=[];return this};var a=["add","append","clearAll","prepend","set","setOnce","unset"];
-          for(var u=0;u<a.length;u++){i(o,a[u])}n.Identify=o;var c=function(){this._q=[];return this;
+          for(var u=0;u<a.length;u++){s(o,a[u])}n.Identify=o;var c=function(){this._q=[];return this;
           };var p=["setProductId","setQuantity","setPrice","setRevenueType","setEventProperties"];
-          for(var l=0;l<p.length;l++){i(c,p[l])}n.Revenue=c;var d=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId"];
+          for(var l=0;l<p.length;l++){s(c,p[l])}n.Revenue=c;var d=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId"];
           function v(e){function t(t){e[t]=function(){e._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
-          }}for(var n=0;n<d.length;n++){t(d[n])}}v(n);e.amplitude=n})(window,document);
+          }}for(var n=0;n<d.length;n++){t(d[n])}}v(n);n.getInstance=function(e){e=(!e||e.length===0?"$default_instance":e).toLowerCase();
+          if(!n._iq.hasOwnProperty(e)){n._iq[e]={_q:[]};v(n._iq[e])}return n._iq[e]};e.amplitude=n;
+          })(window,document);
 
           amplitude.init("YOUR_API_KEY_HERE");
         </script>

amplitude-segment-snippet.min.js

@@ -1,8 +1,10 @@
-(function(e,t){var r=e.amplitude||{_q:[]};function n(e,t){e.prototype[t]=function(){
-this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));return this}}var s=function(){
-this._q=[];return this};var i=["add","append","clearAll","prepend","set","setOnce","unset"];
-for(var o=0;o<i.length;o++){n(s,i[o])}r.Identify=s;var a=function(){this._q=[];return this;
+(function(e,t){var n=e.amplitude||{_q:[],_iq:{}};function r(e,t){e.prototype[t]=function(){
+this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));return this}}var i=function(){
+this._q=[];return this};var s=["add","append","clearAll","prepend","set","setOnce","unset"];
+for(var o=0;o<s.length;o++){r(i,s[o])}n.Identify=i;var a=function(){this._q=[];return this;
 };var u=["setProductId","setQuantity","setPrice","setRevenueType","setEventProperties"];
-for(var c=0;c<u.length;c++){n(a,u[c])}r.Revenue=a;var p=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId"];
-function l(e){function t(t){e[t]=function(){e._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
-}}for(var r=0;r<p.length;r++){t(p[r])}}l(r);e.amplitude=r})(window,document);
+for(var c=0;c<u.length;c++){r(a,u[c])}n.Revenue=a;var l=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId"];
+function p(e){function t(t){e[t]=function(){e._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
+}}for(var n=0;n<l.length;n++){t(l[n])}}p(n);n.getInstance=function(e){e=(!e||e.length===0?"$default_instance":e).toLowerCase();
+if(!n._iq.hasOwnProperty(e)){n._iq[e]={_q:[]};p(n._iq[e])}return n._iq[e]};e.amplitude=n;
+})(window,document);

amplitude-snippet.min.js

@@ -1,10 +1,12 @@
-(function(e,t){var n=e.amplitude||{_q:[]};var r=t.createElement("script");r.type="text/javascript";
+(function(e,t){var n=e.amplitude||{_q:[],_iq:{}};var r=t.createElement("script");r.type="text/javascript";
 r.async=true;r.src="https://d24n15hnbwhuhn.cloudfront.net/libs/amplitude-2.12.1-min.gz.js";
-r.onload=function(){e.amplitude.runQueuedFunctions()};var s=t.getElementsByTagName("script")[0];
-s.parentNode.insertBefore(r,s);function i(e,t){e.prototype[t]=function(){this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
+r.onload=function(){e.amplitude.runQueuedFunctions()};var i=t.getElementsByTagName("script")[0];
+i.parentNode.insertBefore(r,i);function s(e,t){e.prototype[t]=function(){this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
 return this}}var o=function(){this._q=[];return this};var a=["add","append","clearAll","prepend","set","setOnce","unset"];
-for(var u=0;u<a.length;u++){i(o,a[u])}n.Identify=o;var c=function(){this._q=[];return this;
+for(var u=0;u<a.length;u++){s(o,a[u])}n.Identify=o;var c=function(){this._q=[];return this;
 };var p=["setProductId","setQuantity","setPrice","setRevenueType","setEventProperties"];
-for(var l=0;l<p.length;l++){i(c,p[l])}n.Revenue=c;var d=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId"];
+for(var l=0;l<p.length;l++){s(c,p[l])}n.Revenue=c;var d=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId"];
 function v(e){function t(t){e[t]=function(){e._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
-}}for(var n=0;n<d.length;n++){t(d[n])}}v(n);e.amplitude=n})(window,document);
+}}for(var n=0;n<d.length;n++){t(d[n])}}v(n);n.getInstance=function(e){e=(!e||e.length===0?"$default_instance":e).toLowerCase();
+if(!n._iq.hasOwnProperty(e)){n._iq[e]={_q:[]};v(n._iq[e])}return n._iq[e]};e.amplitude=n;
+})(window,document);

src/amplitude-snippet.js

@@ -1,5 +1,5 @@
 (function(window, document) {
-  var amplitude = window.amplitude || {'_q':[]};
+  var amplitude = window.amplitude || {'_q':[],'_iq':{}};
   var as = document.createElement('script');
   as.type = 'text/javascript';
   as.async = true;
@@ -33,5 +33,12 @@
     for (var k = 0; k < funcs.length; k++) {proxyMain(funcs[k]);}
   }
   setUpProxy(amplitude);
+  amplitude.getInstance = function(instance) {
+    instance = ((!instance || instance.length===0) ? '$default_instance' : instance).toLowerCase();
+    if (!amplitude._iq.hasOwnProperty(instance)) {
+      amplitude._iq[instance] = {'_q':[]}; setUpProxy(amplitude._iq[instance]);
+    }
+    return amplitude._iq[instance];
+  };
   window.amplitude = amplitude;
 })(window, document);