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check for element before using it

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This commit is contained in:
Sergio Crisostomo 2017-12-14 10:53:50 +01:00
parent abb2cae6da
commit be2640b394
1 changed files with 1 additions and 1 deletions
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2
src/components/scroll/scroll.vue
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@ -228,8 +228,8 @@
},
onScroll() {
if (this.isLoading) return;
const el = this.$refs.scrollContainer;
if (this.isLoading || !el) return;
const scrollDirection = Math.sign(this.lastScroll - el.scrollTop); // IE has no Math.sign, check that webpack polyfills this
const displacement = el.scrollHeight - el.clientHeight - el.scrollTop;