From 01670004fd1fee6137e5068dad6bd306603562a0 Mon Sep 17 00:00:00 2001
From: YM <479443481@qq.com>
Date: 星期二, 14 五月 2024 19:17:51 +0800
Subject: [PATCH] 分章节渲染
---
src/books/childHealth/view/content/index.vue | 116 +++++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 95 insertions(+), 21 deletions(-)
diff --git a/src/books/childHealth/view/content/index.vue b/src/books/childHealth/view/content/index.vue
index e47625e..9972ef9 100644
--- a/src/books/childHealth/view/content/index.vue
+++ b/src/books/childHealth/view/content/index.vue
@@ -1,20 +1,24 @@
<template>
- <div class="page-content">
- <pageHeader v-if="showCatalogList.indexOf(0) > -1"></pageHeader>
- <chapterOne v-if="showCatalogList.indexOf(1) > -1"></chapterOne>
- <chapterOne v-if="showCatalogList.indexOf(1) > -1"></chapterOne>
- <chapterTwo v-if="showCatalogList.indexOf(2) > -1"></chapterTwo>
- <chapterThree v-if="showCatalogList.indexOf(3) > -1"></chapterThree>
- <chapterFour v-if="showCatalogList.indexOf(4) > -1"></chapterFour>
- <chapterFive v-if="showCatalogList.indexOf(5) > -1"></chapterFive>
- <chapterSix v-if="showCatalogList.indexOf(6) > -1"></chapterSix>
- <chapterSeven v-if="showCatalogList.indexOf(7) > -1"></chapterSeven>
- <chapterEight v-if="showCatalogList.indexOf(8) > -1"></chapterEight>
- <chapterNine v-if="showCatalogList.indexOf(9) > -1"></chapterNine>
- <chapterTen v-if="showCatalogList.indexOf(10) > -1"></chapterTen>
- <chapterEleven v-if="showCatalogList.indexOf(11) > -1"></chapterEleven>
- <chapterTwelve v-if="showCatalogList.indexOf(12) > -1"></chapterTwelve>
- <chapterThirteen v-if="showCatalogList.indexOf(13) > -1"></chapterThirteen>
+ <div class="page-main" @scroll="throttledScrollHandler">
+ <div class="page-content">
+ <pageHeader v-if="showCatalogList.indexOf(0) > -1"></pageHeader>
+ <chapterOne v-if="showCatalogList.indexOf(1) > -1"></chapterOne>
+ <chapterOne v-if="showCatalogList.indexOf(1) > -1"></chapterOne>
+ <chapterTwo v-if="showCatalogList.indexOf(2) > -1"></chapterTwo>
+ <chapterThree v-if="showCatalogList.indexOf(3) > -1"></chapterThree>
+ <chapterFour v-if="showCatalogList.indexOf(4) > -1"></chapterFour>
+ <chapterFive v-if="showCatalogList.indexOf(5) > -1"></chapterFive>
+ <chapterSix v-if="showCatalogList.indexOf(6) > -1"></chapterSix>
+ <chapterSeven v-if="showCatalogList.indexOf(7) > -1"></chapterSeven>
+ <chapterEight v-if="showCatalogList.indexOf(8) > -1"></chapterEight>
+ <chapterNine v-if="showCatalogList.indexOf(9) > -1"></chapterNine>
+ <chapterTen v-if="showCatalogList.indexOf(10) > -1"></chapterTen>
+ <chapterEleven v-if="showCatalogList.indexOf(11) > -1"></chapterEleven>
+ <chapterTwelve v-if="showCatalogList.indexOf(12) > -1"></chapterTwelve>
+ <chapterThirteen
+ v-if="showCatalogList.indexOf(13) > -1"
+ ></chapterThirteen>
+ </div>
</div>
</template>
@@ -34,18 +38,76 @@
import chapterTwelve from "./components/chapter012.vue";
import chapterThirteen from "./components/chapter013.vue";
+import _ from "lodash";
+
export default {
- name: "temp-book",
data() {
return {
- catalogLength: 13,
- showCatalogList: []
+ catalogLength: 13, // 鎬荤珷鑺傛暟
+ showCatalogList: [], // 鏄剧ず鐨勭珷鑺�
+ loadThreshold: 300, // 瑙﹀彂鍔犺浇闃堝��
+ throttleThreshold: 100, // 鑺傛祦闃堝��
+ previousScrollTop: 0,
+ throttledScrollHandler: null
};
},
mounted() {
+ // 榛樿鍔犺浇绔犺妭
this.showCatalogList = [0];
+ // 婊氬姩鐩戝惉鑺傛祦
+ this.throttledScrollHandler = _.throttle(
+ this.scrollFun,
+ this.throttleThreshold,
+ { leading: true, trailing: false }
+ );
},
- methods: {},
+ methods: {
+ scrollFun(e) {
+
+ // 鍒ゆ柇鍚戜笂婊氬姩杩樻槸鍚戜笅婊氬姩
+ if (event.target.scrollTop > this.previousScrollTop) {
+ console.log("鍚戜笅婊氬姩");
+ const currentScrollTop =
+ event.target.scrollTop + event.target.offsetHeight;
+ if (
+ currentScrollTop >=
+ event.target.scrollHeight - this.loadThreshold
+ ) {
+ // 鍒拌揪闃堝��
+ if (
+ this.showCatalogList[this.showCatalogList.length - 1] <
+ this.catalogLength
+ ) {
+ // 鍔犺浇涓嬩竴绔�
+ this.showCatalogList.push(
+ this.showCatalogList[this.showCatalogList.length - 1] + 1
+ );
+ if (this.showCatalogList.length > 3) {
+ // 瓒呰繃涓夌珷闅愯棌椤堕儴涓�绔�
+ this.showCatalogList.shift();
+ }
+ }
+ }
+ } else if (event.target.scrollTop < this.previousScrollTop) {
+ console.log("鍚戜笂婊氬姩");
+ const currentScrollTop = event.target.scrollTop;
+ if (currentScrollTop <= this.loadThreshold) {
+ // 鍒拌揪闃堝��
+ if (this.showCatalogList[0] > 0) {
+ // 鍔犺浇涓婁竴绔�
+ this.showCatalogList.unshift(this.showCatalogList[0] - 1);
+ if (this.showCatalogList.length > 3) {
+ // 瓒呰繃涓夌珷闅愯棌搴曢儴涓�绔�
+ this.showCatalogList.pop();
+ }
+ }
+ }
+ }
+ console.log(this.showCatalogList);
+ // 鏇存柊涓婁竴娆℃粴鍔ㄧ殑浣嶇疆
+ this.previousScrollTop = event.target.scrollTop;
+ }
+ },
components: {
pageHeader,
chapterOne,
@@ -65,4 +127,16 @@
};
</script>
-<style lang="less" scoped></style>
+<style lang="less" scoped>
+.page-main {
+ width: 100%;
+ height: 100%;
+ overflow: auto;
+ .page-content {
+ max-width: 816px;
+ min-width: 375px;
+ margin: 0 auto;
+ padding-bottom: 100px;
+ }
+}
+</style>
--
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