null and type check what comes through postmessage
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13
js/reveal.js
13
js/reveal.js
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@ -575,11 +575,16 @@ var Reveal = (function(){
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if( config.postMessage ) {
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window.addEventListener( 'message', function ( event ) {
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var data = JSON.parse( event.data );
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var method = Reveal[data.method];
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var data = event.data;
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if( typeof method === 'function' ) {
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method.apply( Reveal, data.args );
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// Make sure we're dealing with JSON
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if( data.charAt( 0 ) === '{' && data.charAt( data.length - 1 ) === '}' ) {
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data = JSON.parse( data );
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// Check if the requested method can be found
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if( data.method && typeof Reveal[data.method] === 'function' ) {
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Reveal[data.method].apply( Reveal, data.args );
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}
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}
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}, false );
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}
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