去除首页hometop方法里的 rect.top报错问题

pages/index/index.vue

@@ -194,7 +194,9 @@ const hometop = async () => {
 			const query = uni.createSelectorQuery().select('#fourcontent');
 			query
 				.boundingClientRect((rect) => {
-					elementTop.value = rect.top - store.height;
+					if(rect){
+						elementTop.value = rect.top - store.height;
+					}
 				})
 				.exec();
 		}, 500);