From 67d22fb0aeb9fe90b766abae0e41cb04aebc1296 Mon Sep 17 00:00:00 2001
From: YM <479443481@qq.com>
Date: 星期五, 17 五月 2024 15:45:09 +0800
Subject: [PATCH] 页码监听
---
src/books/childHealth/view/content/index.vue | 71 ++++++++++++++++++++++++++++++-----
1 files changed, 61 insertions(+), 10 deletions(-)
diff --git a/src/books/childHealth/view/content/index.vue b/src/books/childHealth/view/content/index.vue
index 6e37da0..920b6dc 100644
--- a/src/books/childHealth/view/content/index.vue
+++ b/src/books/childHealth/view/content/index.vue
@@ -46,7 +46,8 @@
loadThreshold: 300, // 瑙﹀彂鍔犺浇闃堝��
throttleThreshold: 100, // 鑺傛祦闃堝��
previousScrollTop: 0,
- throttledScrollHandler: null
+ throttledScrollHandler: null,
+ observer: null
};
},
watch: {
@@ -61,6 +62,10 @@
showCatalogList: newVal
});
}
+ // 鍚姩椤电爜瑙傚療
+ setTimeout(() => {
+ this.initObservation();
+ }, 500);
}
}
},
@@ -91,6 +96,19 @@
});
}
+ // 鍒涘缓涓�涓柊鐨� Intersection Observer 瀹炰緥锛岀敤浜庤瀵熺洰鏍囧厓绱犲拰鎵ц鐩稿簲鐨勫洖璋冨嚱鏁般��
+ // new IntersectionObserver(callback, options)锛氫娇鐢ㄤ箣鍓嶅畾涔夌殑 callback 鍥炶皟鍑芥暟鍜� options 閰嶇疆閫夐」鏉ュ垵濮嬪寲 Intersection Observer 瀹炰緥銆�
+ this.observer = new IntersectionObserver(this.pageChangeCallback, {
+ root: null, // 鎸囧畾鏍瑰厓绱狅紝杩欓噷璁句负 null锛岃〃绀洪�夊彇鏁翠釜瑙嗙獥浣滀负鏍瑰厓绱犮��
+ rootMargin: "0px", // 鎸囧畾鏍瑰厓绱犵殑杈圭晫锛岃繖閲岃涓� "0px"锛岃〃绀烘牴鍏冪礌鐨勮竟鐣屽拰瑙嗙獥鐨勮竟鐣岄噸鍚�
+ threshold: 0.5 // 鎸囧畾浜ゅ弶姣斾緥锛岃繖閲岃涓� 0.5锛岃〃绀哄綋鐩爣鍏冪礌涓�鍗婃垨鏇村鏄剧ず鍦ㄨ绐椾腑鏃惰Е鍙戝洖璋冨嚱鏁般��
+ });
+
+ // 鍚姩椤电爜瑙傚療
+ setTimeout(() => {
+ this.initObservation();
+ }, 500);
+
// 娴嬭瘯椤甸潰璺宠浆
// setTimeout(() => {
// this.gotoPage(5, 100);
@@ -111,6 +129,7 @@
// }, 3000);
},
methods: {
+ // 婊氬姩鐩戝惉
scrollFun(event) {
// 鍒ゆ柇鍚戜笂婊氬姩杩樻槸鍚戜笅婊氬姩
if (event.target.scrollTop > this.previousScrollTop) {
@@ -154,16 +173,8 @@
// showCatalogList 褰撳墠鏄剧ず鐨勪笁涓珷鑺傦紝watch鐩戝惉浼犻�掔粰涓诲簲鐢�
// 鏇存柊涓婁竴娆℃粴鍔ㄧ殑浣嶇疆
this.previousScrollTop = event.target.scrollTop;
-
- // 杩斿洖椤电爜鍜岀珷鑺備俊鎭�
- // if (this.$store.state.qiankun && this.$store.state.qiankun.pageChange)
- // this.$store.state.qiankun.pageChange({
- // page: 100,
- // catalog: 5,
- // catalogId: "",
- // catalogName: ""
- // });
},
+ // 绔犺妭銆侀〉闈㈣烦杞�
gotoPage(catalog, page) {
if (catalog >= 0 && catalog <= this.catalogLength) {
// 澶勭悊娓叉煋绔犺妭
@@ -193,6 +204,7 @@
console.log("绔犺妭閿欒锛�");
}
},
+ // 娓叉煋鏍囪
renderSign(type, data) {
const existence = (
this.container ? this.container : document
@@ -228,6 +240,7 @@
}
}
},
+ // 鍒犻櫎鏍囪娓叉煋
delSign({ ids, type }) {
if (ids && ids.length) {
for (let i = 0; i < ids.length; i++) {
@@ -253,6 +266,44 @@
);
}
}
+ },
+ initObservation() {
+ const sections = document.querySelectorAll(".page-box");
+ //observer 瑙傚療姣忎釜鍏冪礌锛屼互渚垮湪瀹冧滑杩涘叆鎴栫寮�瑙嗙獥鏃惰Е鍙戝洖璋冨嚱鏁般��
+ sections.forEach((section) => {
+ const isObserver = section.getAttribute("observer");
+ if (!isObserver) {
+ this.observer.observe(section);
+ section.setAttribute("observer", "1");
+ }
+ });
+ },
+ pageChangeCallback(entries, observer) {
+ //entries锛氫唬琛ㄨ瀵熷埌鐨勭洰鏍囧厓绱犵殑闆嗗悎銆� observer锛氫唬琛ㄨ瀵熻�呭璞°��
+ entries.forEach((entry) => {
+ //entry.isIntersecting锛氭鏌ュ綋鍓嶇洰鏍囧厓绱犳槸鍚︿笌鏍瑰厓绱犵浉浜ゃ��
+ if (entry.isIntersecting) {
+ const target = entry.target;
+ //entry.target锛氳幏鍙栧綋鍓嶇洰鏍囧厓绱�
+ const page = target.getAttribute("page");
+ const catalogDom = this.tool.getParentNodeByClassName(
+ target,
+ "chapter"
+ );
+ const catalog = catalogDom.getAttribute("num");
+ console.log("page", page, catalog);
+ // 杩斿洖椤电爜鍜岀珷鑺備俊鎭�
+ if (this.$store.state.qiankun && this.$store.state.qiankun.pageChange)
+ this.$store.state.qiankun.pageChange({
+ page: page,
+ catalog: catalog
+ });
+ // const sections = Array.from(document.querySelectorAll(".section"));
+ //sections锛氳幏鍙栨墍鏈夊叿鏈� .section 绫诲悕鐨勫厓绱狅紝骞惰浆鎹负鏁扮粍銆�
+ // let index = sections.findIndex((section) => section === target) + 1;
+ //index锛氭煡鎵惧綋鍓嶇洰鏍囧厓绱犲湪 sections 鏁扮粍涓殑绱㈠紩锛屽苟鍔� 1锛岀敤浜庣‘瀹氬綋鍓嶉〉鐮併��
+ }
+ });
}
},
components: {
--
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