Use localStorage to cache images on client side

1f719461 · Thibaut Broggi · ae09f0b1 · 1f719461
Verified Commit 1f719461 authored Nov 07, 2017 by Thibaut Broggi
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Showing with 3 additions and 3 deletions

static/canvas.js static/canvas.js +3 -3

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--- a/static/canvas.js
+++ b/static/canvas.js
@@ -37,11 +37,11 @@ let get = function(url, cb) {
 }

 let getImage = function(id, cb) {
-  if (cachedImages[id])
-    cb(cachedImages[id]);
+  if (localStorage.getItem('img:' + id))
+    cb(localStorage.getItem('img:' + id));
  else {
    get('./imgs/' + id + '.svg', function(res) {
-      cachedImages[id] = res;
+      localStorage.setItem('img:' + id, res);
      cb(res);
    });
  }