Tree: try to fix ie10 transition error.

ca1bdd43 · Furybean · 杨奕 · 8a4b7ba6 · ca1bdd43
Commit ca1bdd43 authored Nov 28, 2016 by Furybean Committed by 杨奕 Nov 28, 2016
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packages/tree/src/transition.js packages/tree/src/transition.js +2 -0

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--- a/packages/tree/src/transition.js
+++ b/packages/tree/src/transition.js
 class Transition {
  beforeEnter(el) {
+    if (!el.dataset) el.dataset = {};
    el.dataset.oldPaddingTop = el.style.paddingTop;
    el.dataset.oldPaddingBottom = el.style.paddingBottom;
    el.style.height = '0';
@@ -31,6 +32,7 @@ class Transition {
  }

  beforeLeave(el) {
+    if (!el.dataset) el.dataset = {};
    el.dataset.oldPaddingTop = el.style.paddingTop;
    el.dataset.oldPaddingBottom = el.style.paddingBottom;
    el.dataset.oldOverflow = el.style.overflow;