Polyfill cancelAnimationFrame

GoogleChromeLabs · May 19, 2018 · e81c32a · e81c32a
1 parent 9ccab3a
commit e81c32a
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/demo/demo.js b/demo/demo.js
@@ -28,7 +28,10 @@ CSS.paintWorklet.addModule('./ripple-worklet.js');
 
 if (!window.performance) window.performance = { now: Date.now.bind(Date) };
 
-if (!window.requestAnimationFrame) window.requestAnimationFrame = function(cb) { return setTimeout(doAnim, 16, cb); };
+if (!window.requestAnimationFrame) {
+    window.requestAnimationFrame = function(cb) { return setTimeout(doAnim, 16, cb); };
+    window.cancelAnimationFrame = function(req) { clearTimeout(req); }
+}
 function doAnim(cb) { cb(performance.now()); }
 
 function ripple(button, evt) {