From c191a7e1cf7c427fc11926e67d35f8fc784bc291 Mon Sep 17 00:00:00 2001
From: Jason Chen <jhchen7@gmail.com>
Date: Sun, 28 Aug 2016 22:10:14 -0700
Subject: [PATCH] null check for ie11

---
 modules/clipboard.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules/clipboard.js b/modules/clipboard.js
index d542b6d96b..1fc724960c 100644
--- a/modules/clipboard.js
+++ b/modules/clipboard.js
@@ -116,9 +116,9 @@ class Clipboard extends Module {
     if (e.defaultPrevented) return;
     let range = this.quill.getSelection();
     let delta = new Delta().retain(range.index).delete(range.length);
-    let types = e.clipboardData.types;
+    let types = e.clipboardData ? e.clipboardData.types : null;
     if ((types instanceof DOMStringList && types.contains("text/html")) ||
-        (types.indexOf && types.indexOf('text/html') !== -1)) {
+        (types && types.indexOf && types.indexOf('text/html') !== -1)) {
       this.container.innerHTML = e.clipboardData.getData('text/html');
       paste.call(this);
       e.preventDefault();