🎈 perf(购物页面): 改善滚动列表的加载

src/common/util.ts

@@ -61,16 +61,16 @@ export const getFilterData = (val = {}, arr: string[] = []) => {
  * @param {*} object
  * @returns
  */
-export const copyObject = (object) => {
+export const copyObject = object => {
   if (object.constructor == Object) {
     let keys = Object.keys(object)
     let newObject = {}
-    keys.map((key) => {
+    keys.map(key => {
       newObject[key] = copyObject(object[key])
     })
     return newObject
   } else if (object.constructor == Array) {
-    return object.map((item) => {
+    return object.map(item => {
       return copyObject(item)
     })
   } else {
@@ -93,9 +93,17 @@ export const copyObject = (object) => {
 export const screenshot = (url, suffix = '!w200') => {
   return url + suffix
 }
-
+interface DataLoadingStatus {
+  list: any[]
+  total: number
+  status: boolean
+}
 //获取数据加载状态 //0:数据从无到有加载数据，1，没有任何数据， 2：下拉加载，3：下拉没有数据
-export const dataLoadingStatus = ({ list = [], total = 0, status = false }: { list: any[]; total: number; status: true | false }) => {
+export const dataLoadingStatus = ({ list = [], total = 0, status = true }: DataLoadingStatus) => {
+  // 类型校验
+  if (Object.prototype.toString.call(list) !== '[object Array]') {
+    list = []
+  }
   if (list.length == 0 && status) {
     return 0
   } else if (list.length == 0 && !status) {
@@ -107,7 +115,6 @@ export const dataLoadingStatus = ({ list = [], total = 0, status = false }: { li
   }
 }
 
-
 function delay(delayTime = 25): Promise<null> {
   return new Promise(resolve => {
     setTimeout(() => {
@@ -117,10 +124,7 @@ function delay(delayTime = 25): Promise<null> {
   })
 }
 
-export function delayQuerySelector(
-  selectorStr: string,
-  delayTime = 500
-): Promise<any[]> {
+export function delayQuerySelector(selectorStr: string, delayTime = 500): Promise<any[]> {
   return new Promise(resolve => {
     const selector: SelectorQuery = Taro.createSelectorQuery()
     delay(delayTime).then(() => {
@@ -134,7 +138,6 @@ export function delayQuerySelector(
   })
 }
 
-
 //全局分享监听
 export const shareShop = () => {
   const page = Taro.getCurrentInstance().page
@@ -143,7 +146,7 @@ export const shareShop = () => {
     analysisShortCodeApi(page.options.share)
   }
   if (page && page.onShareAppMessage) {
-    page.onShareAppMessage = (res) => {
+    page.onShareAppMessage = res => {
       let path = ''
       let title = ''
       let imageUrl = ''
@@ -170,5 +173,3 @@ export const shareShop = () => {
     }
   }
 }
-
-