comparison core.js @ 6:bd0bd3033ac5

Added check for one of A/B to be selected

 		
 		document.getElementsByTagName("head")[0].appendChild(css);
 		break;
 		
 		case "AB":
-		interfaceJS.setAttribute("src","interfaces/AB.js?0");
+		interfaceJS.setAttribute("src","interfaces/AB.js?"+Math.random());
 		
 		// AB comes with a css file
 		var css = document.createElement('link');
 		css.rel = 'stylesheet';
 		css.type = 'text/css';

 			str += 'and '+failed[i];
 		}
 		str +='.';
 		alert(str);
 		console.log(str);
-        this.storeErrorNode(str);
+		this.storeErrorNode(str);
 		return false;
 	};
+	this.checkOneFragmentSelected = function(){
+		console.log("checkOneFragmentSelected");
+		var str = "You should select an answer before continuing";
+		if(this.comparator.selected === null){
+			alert(str);
+			return false;
+		} else {
+			return true;
+		}
+ 	};
 	this.checkAllPlayed = function()
 	{
 		var str = "You have not played ";
 		var failed = [];
 		for (var ao of audioEngineContext.audioObjects)