diff --git a/plugin/postmessage/example.html b/plugin/postmessage/example.html
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diff --git a/plugin/postmessage/iframe_example.html b/plugin/postmessage/iframe_example.html
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diff --git a/plugin/postmessage/postmessage.js b/plugin/postmessage/postmessage.js
index 176d2306..d0f41407 100644
--- a/plugin/postmessage/postmessage.js
+++ b/plugin/postmessage/postmessage.js
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/*
-simple postmessage plugin
-Useful when a reveal slideshow is inside an iframe.
-It allows to call reveal methods from outside.
+ simple postmessage plugin
-Example:
- var reveal = window.frames[0];
+ Useful when a reveal slideshow is inside an iframe.
+ It allows to call reveal methods from outside.
- // Reveal.prev();
- reveal.postMessage(JSON.stringify({method: 'prev', args: []}), '*');
- // Reveal.next();
- reveal.postMessage(JSON.stringify({method: 'next', args: []}), '*');
- // Reveal.slide(2, 2);
- reveal.postMessage(JSON.stringify({method: 'slide', args: [2,2]}), '*');
+ Example:
+ var reveal = window.frames[0];
-Add to the slideshow:
+ // Reveal.prev();
+ reveal.postMessage(JSON.stringify({method: 'prev', args: []}), '*');
+ // Reveal.next();
+ reveal.postMessage(JSON.stringify({method: 'next', args: []}), '*');
+ // Reveal.slide(2, 2);
+ reveal.postMessage(JSON.stringify({method: 'slide', args: [2,2]}), '*');
- dependencies: [
- ...
- { src: 'plugin/postmessage/postmessage.js', async: true, condition: function() { return !!document.body.classList; } }
- ]
+ Add to the slideshow:
+ dependencies: [
+ ...
+ { src: 'plugin/postmessage/postmessage.js', async: true, condition: function() { return !!document.body.classList; } }
+ ]
*/
(function (){
-window.addEventListener("message", function (event){
- var data = JSON.parse(event.data),
- method = data.method,
- args = data.args;
- if (Reveal[method]){
- Reveal[method].apply(Reveal, data.args);
- }
-}, false);
+ window.addEventListener( "message", function ( event ) {
+ var data = JSON.parse( event.data ),
+ method = data.method,
+ args = data.args;
+
+ if( typeof Reveal[method] === 'function' ) {
+ Reveal[method].apply( Reveal, data.args );
+ }
+ }, false);
+
}());