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Merge pull request #2624 from SergioCrisostomo/check-for-element-before

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check for element before using it
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Aresn 2017-12-14 19:43:56 +08:00 • committed by GitHub
commit 52830ca693
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src/components/scroll/scroll.vue
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@ -228,8 +228,8 @@
}, },
onScroll() { onScroll() {
if (this.isLoading) return;
const el = this.$refs.scrollContainer; const el = this.$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 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; const displacement = el.scrollHeight - el.clientHeight - el.scrollTop;