fix 限时特惠优化

src/pages/home/index.vue

@@ -19,7 +19,7 @@
             <cube-nav :datas="item"></cube-nav>
           </div>
           <div v-else-if="item.componentCode == 'time-limited-discount' && item.componentInfo.visible == 1">
-            <time-limited-discount :datas="item"></time-limited-discount>
+            <time-limited-discount :class="'time-limited-discount'+index" :datas="item" :k="index"></time-limited-discount>
           </div>
           <div v-if="item.componentCode == 'links' && item.componentInfo.visible == 1">
             <links :datas="item"></links>
@@ -103,6 +103,7 @@ import imgText from '@/components/content/imgText'
 import coupon from '@/components/activity/coupon'
 import integralTurntable from '@/components/activity/integralTurntable'
 import { setTabBarActive, checkTabbarPage,themeColor } from "../../utils/mayi.js";
+import { throttle } from "../../utils/index.js"
 const app = getApp();
 
 export default {
@@ -179,17 +180,7 @@ export default {
     this.changeLocation = options.changeLocation || ''
 
     if(this.changeLocation == 1){
-      // let extConfig = wx.getExtConfigSync ? wx.getExtConfigSync() : {};
-      // console.log(extConfig, "-----------extConfig");
-      // if (
-      //   process.env.NODE_ENV == "development" ||
-      //   JSON.stringify(extConfig) == "{}"
-      // ) {
-      //   extConfig = { mixid: "antgood", shopid: 67 };
-      // }
-
       console.log('this.$store.state.extConfig',this.$store.state.extConfig)     
-      
       app.getShopInfo(this.$store.state.extConfig);
       app.getThemePage(this.$store.state.extConfig);
     }
@@ -230,10 +221,11 @@ export default {
   onShow() {
     setTabBarActive.bind(this)(checkTabbarPage('/'));
     this.$mp.page.onPageScroll= (el)=>{
-      this.scrolls(el);
+      throttle(this.scrolls(el),100)
     };
   },
   methods: {
+    
     init(pageList) {
       
       setTabBarActive.bind(this)(checkTabbarPage('/'));
@@ -250,9 +242,20 @@ export default {
     },
     scrolls(el){
       this.setFooterShow(el);
+      // 优化
       if(this.$mp.page && this.$mp.page.selectComponent(".goodsListItem")){
         this.$mp.page.selectComponent(".goodsListItem").getScroll(el);
       }
+      // 优化
+      if (this.pageData) {
+        for (let i = 0; i < this.pageData.length; i++) {
+          const element = this.pageData[i]
+          if(element.componentCode=="time-limited-discount"){
+            let com=this.$mp.page.selectComponent(".time-limited-discount"+i) ;
+            com && com.getScroll(el);
+          }
+        }
+      }
     },
     setFooterShow(el){
       let afterScrollTop = el.scrollTop;

src/utils/index.js

@@ -2,6 +2,29 @@ function formatNumber(n) {
   const str = n.toString()
   return str[1] ? str : `0${str}`
 }
+// 防抖
+export function debounce(fn, wait) {
+  var timeout = null;
+  return function() {
+      if (timeout !== null)
+          clearTimeout(timeout);
+      timeout = setTimeout(fn, wait);
+  }
+}
+
+// 节流
+export function throttle(func, delay) {
+  var prev = Date.now();
+  return function() {
+      var context = this;
+      var args = arguments;
+      var now = Date.now();
+      if (now - prev >= delay) {
+          func.apply(context, args);
+          prev = Date.now();
+      }
+  }
+}
 
 //格式时间
 export function formatTime(date) {

static/nativeComponents/TimeLimitedDiscount/index.js

@@ -39,6 +39,7 @@ xcsoft.countdown = function(a, b, c) {
   d.minute = 0;
   d.second = 0;
   d.t = setInterval(function() {
+    console.log('倒计时')
     e = new Date().getTime();
     f = parseInt(e / 1000 + x);
     var l = d.time - f;
@@ -109,10 +110,15 @@ const componentOptions = {
   properties: {
     datas: {
       type: Object
+    },
+    k:{
+      type:String
     }
   },
   // 组件数据
   data: {
+    loaded:false,
+    isContain:false,
     isPageHidden: false, // 页面是否处于隐藏状态
     timeData: {},
     isLoading: true,
@@ -243,6 +249,24 @@ const componentOptions = {
         }
       });
     },
+    getScroll(){
+      this.getEleInfo(()=>{
+        this.getData()
+      });
+    },
+    // 获取当前组件位置信息
+    getEleInfo(cb){
+      if(this.loaded || this.isContain) return 
+      this.isContain=true;
+      let {windowHeight} = wx.getSystemInfoSync()
+      let query=wx.createSelectorQuery().in(this);
+      query.select('.time-limited-discount').boundingClientRect(rect=>{
+        if (rect.top<windowHeight && rect.top+rect.height>0) {
+          cb && cb()
+        }
+        this.isContain=false;
+      }).exec();
+    },
     onChange(e) {
       this.setData({ timeData: e.detail });
     },
@@ -275,6 +299,8 @@ const componentOptions = {
       });
     },
     getData() {
+      if(this.loaded) return 
+      this.loaded=true
       let { dimension } = this.data.datas.componentData;
       if (dimension == 0) {
         this.init();
@@ -287,7 +313,11 @@ const componentOptions = {
   lifetimes: {
     created() {},
     ready() {
-      this.getData();
+       this.loaded=false;
+      this.isContain=false;
+      this.getEleInfo(()=>{
+        this.getData()
+      });
     },
     moved() {},
     detached() {}
@@ -297,7 +327,11 @@ const componentOptions = {
   pageLifetimes: {
     // 页面被展示
     show() {
-      this.getData();
+      this.loaded=false;
+      this.isContain=false;
+      this.getEleInfo(()=>{
+        this.getData()
+      });
       const { isPageHidden } = this.data;
       // show事件发生前，页面不是处于隐藏状态时
       if (!isPageHidden) {