Add upstream

wp-content/plugins/jetpack/modules/shortcodes/js/quiz.js

@@ -0,0 +1,67 @@
+( function( $ ) {
+	$.fn.shuffleQuiz = function() {
+		var allElems = this.get(),
+			getRandom = function( max ) {
+				return Math.floor( Math.random() * max );
+			},
+			shuffled = $.map( allElems, function() {
+				var random = getRandom( allElems.length ),
+					randEl = $( allElems[ random ] ).clone( true )[ 0 ];
+				allElems.splice( random, 1 );
+				return randEl;
+			} );
+
+		this.each( function( i ) {
+			$( this ).replaceWith( $( shuffled[ i ] ) );
+		} );
+
+		return $( shuffled );
+	};
+} )( jQuery );
+
+jQuery( function( $ ) {
+	$( '.jetpack-quiz' ).each( function() {
+		var quiz = $( this );
+		quiz.find( 'div.jetpack-quiz-answer' ).shuffleQuiz();
+		quiz
+			.find( 'div[data-correct]' )
+			.removeAttr( 'data-correct' )
+			.data( 'correct', 1 );
+		quiz.find( 'div.jetpack-quiz-answer:last' ).addClass( 'last' );
+	} );
+
+	$( 'div.jetpack-quiz' ).on( 'click', 'div.jetpack-quiz-answer', function() {
+		var trackid,
+			answer = $( this ),
+			quiz = answer.closest( 'div.jetpack-quiz' );
+
+		if ( quiz.data( 'a8ctraining' ) ) {
+			new Image().src =
+				'//pixel.wp.com/b.gif?v=wpcom-no-pv&x_trainingchaos-' +
+				quiz.data( 'username' ) +
+				'=' +
+				quiz.data( 'a8ctraining' ) +
+				'&rand=' +
+				Math.random();
+			quiz.data( 'a8ctraining', false );
+			quiz.data( 'trackid', false );
+		}
+
+		trackid = quiz.data( 'trackid' );
+		if ( answer.data( 'correct' ) ) {
+			answer.addClass( 'correct' );
+			if ( trackid ) {
+				new Image().src =
+					'//pixel.wp.com/b.gif?v=wpcom-no-pv&x_quiz-' + trackid + '=correct&rand=' + Math.random();
+			}
+		} else {
+			answer.addClass( 'wrong' );
+			if ( trackid ) {
+				new Image().src =
+					'//pixel.wp.com/b.gif?v=wpcom-no-pv&x_quiz-' + trackid + '=wrong&rand=' + Math.random();
+			}
+		}
+		// only track the first answer
+		quiz.data( 'trackid', false );
+	} );
+} );