Randomize order of options

src/rand.ts

@@ -0,0 +1,9 @@
+export default function randomize<T>(input: T[]): T[] {
+    let res: T[] = [];
+    input = [...input];
+    while (input.length > 0) {
+        let randomIndex = Math.floor(Math.random() * input.length);
+        res.push(...input.splice(randomIndex, 1));
+    }
+    return res;
+}

src/views/questions/SelectMultiple.svelte

@@ -1,10 +1,12 @@
 <script>
+    import randomize from "../../rand.ts";
+
     export let question;
     export let showResult = false;
     export let isCorrect = false;
 
 
-    $: options = Object.keys(question.options).map(e => ({ key: e, value: question.options[e] }));
+    $: options = randomize(Object.keys(question.options).map(e => ({ key: e, value: question.options[e] })));
 
     let selected = [];
     $: isCorrect = selected.length === question.correct.length && selected.every(val => question.correct.find(v => v === val));

src/views/questions/SelectOne.svelte

@@ -1,11 +1,12 @@
 <script>
+    import randomize from "../../rand.ts";
+
     export let question;
     export let showResult = false;
 
     export let isCorrect = false;
 
-
+    $: options = randomize(Object.keys(question.options).map(e => ({ key: e, value: question.options[e] })));
-    $: options = Object.keys(question.options).map(e => ({ key: e, value: question.options[e] }));
 
     let selected = undefined;
     $: isCorrect = selected === question.correct;