空值判断

This commit is contained in:
pangxie1991 2017-04-12 20:04:08 +08:00
parent b207efe729
commit 832223156f

View File

@ -104,7 +104,8 @@ export default function(type) {
}, },
update(el) { update(el) {
el[CONTEXT].scrollEventListener(); const context = el[CONTEXT];
context.scrollEventListener && context.scrollEventListener();
}, },
unbind(el) { unbind(el) {