X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/f3039a18c2e71e70e35722866f1376a254311ee3..20332e82f5c6365a8d65c75192985d846a99a2dd:/word/quiz.js

diff --git a/word/quiz.js b/word/quiz.js
index bb12a83..d32368b 100644
--- a/word/quiz.js
+++ b/word/quiz.js
@@ -8,21 +8,30 @@ Array.prototype.shuffle = function () {
 
 class WordQuiz {
 	dataselect(json) {
+		this.data = json;
+		this.cats = {}; // category lookup
+		for (let i in json) {
+			let cat = json[i][3];
+			if (this.cats[cat]) {
+				this.cats[cat].push(i);
+			}
+			else {
+				this.cats[cat] = [i];
+			}
+		}
+		return this.datafilter(json);
+	}
+
+	datafilter(json) {
 		// find viable rows from json data
 		let rows = Object.values(json);
-		if (this.preset.cat !== undefined) {
-			let cats = {}; // category lookup
-			for (let i in json) {
-				let cat = json[i][3];
-				if (!cats[cat]) cats[cat] = [];
-				cats[cat].push(i)
-			}
 
+		if (this.preset.cat !== undefined) {
 			rows = [];
-			let children = cats[this.preset.cat];
+			let children = this.cats[this.preset.cat];
 			for (let loop = 0; children.length && loop < 20; loop++) {
 				rows.push(...children);
-				children = children.map(cat => cats[cat]).filter(is => is).flat();
+				children = children.map(cat => this.cats[cat]).filter(is => is).flat();
 			}
 			rows = rows.map(row => json[row]).filter(row => row[2]);
 		}