空值判断

2017-04-12 20:04:08 +08:00
parent b207efe729
commit 832223156f
1 changed files with 2 additions and 1 deletions
@@ -104,7 +104,8 @@ export default function(type) {
    },
    update(el) {
-      el[CONTEXT].scrollEventListener();
+      const context = el[CONTEXT];
      context.scrollEventListener && context.scrollEventListener();
    },
    unbind(el) {