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js/helpers.js

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+/**
+ * Function to randomise an array order
+ * @param {array} array
+ */
+export function shuffleArray(array) {
+  var currentIndex = array.length, temporaryValue, randomIndex;
+  // While there remain elements to shuffle...
+  while (0 !== currentIndex) {
+    // Pick a remaining element...
+    randomIndex = Math.floor(Math.random() * currentIndex);
+    currentIndex -= 1;
+    // And swap it with the current element.
+    temporaryValue = array[currentIndex];
+    array[currentIndex] = array[randomIndex];
+    array[randomIndex] = temporaryValue;
+  }
+  return array;
+}