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refactor(commodity-detail): optimize performance and fix UI flicker issues

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1. add empty form tip for product message section
2. lazy load goods form to unblock initial page render
3. optimize category and tabbar rendering to fix flicker on WeChat mini-program
4. delay non-critical data processing to improve first-screen rendering speed
5. fix popup blank issue when opening product message form for the first time
This commit is contained in:
ZF Sun
2026-07-18 16:57:10 +08:00
parent 9d6c3218fb
commit a6091f6b68
9 changed files with 243 additions and 132 deletions
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57
components-diy/diy-bottom-nav.vue
View File

@@ -1,30 +1,35 @@
<template>
<view data-component-name="diy-bottom-nav" v-if="shouldShowTabBar">
<view class="tab-bar" :style="{ backgroundColor: tabBarList.backgroundColor }">
<view class="tabbar-border"></view>
<view class="item" v-for="(item, index) in tabBarList.list" :key="item.id" @tap.stop="redirectTo(item.link)">
<view class="bd">
<view class="icon" v-if="tabBarList.type == 1 || tabBarList.type == 2"
:animation="isCartItem(item.link) ? cartAnimation : null"
:id="isCartItem(item.link) ? 'tabbarCart' : null">
<block v-if="verify(item.link)">
<image v-if="item.selected_icon_type == 'img'"
:src="$util.img(item.selectedIconPath)" />
<diy-icon v-if="item.selected_icon_type == 'icon'" :icon="item.selectedIconPath"
:value="item.selected_style ? item.selected_style : null"></diy-icon>
</block>
<block v-else>
<image v-if="item.icon_type == 'img'" :src="$util.img(item.iconPath)" />
<diy-icon v-if="item.icon_type == 'icon'" :icon="item.iconPath"
:value="item.style ? item.style : null"></diy-icon>
</block>
<view class="cart-count-mark font-size-activity-tag"
:class="{ max: cartNumber > 99 }"
:style="{ background: 'var(--price-color)' }"
v-if="isCartItem(item.link) && cartNumber > 0">
{{ cartNumber > 99 ? '99+' : cartNumber }}
<!-- 修复底部 TabBar 频闪:
微信小程序等环境下 `shouldShowTabBar` 在 tabBarList 异步加载期间会从 false→true 短暂切换,
配合 `v-if` 会让整个 tab 组件树卸载/重建 -> 视觉频闪 + tabBar 占用空间反复占位/释放导致上方内容跳动。
改为 `v-show`, 只切换可见性, 内部 tab 始终在 DOM 中(无 tabBarList 时只渲染空壳占位)。 -->
<view data-component-name="diy-bottom-nav" v-show="shouldShowTabBar">
<!-- tabBarList 未就绪时仍保留 placeholder 占位, 避免上方内容在加载完成后突跳 -->
<view v-if="tabBarList && tabBarList.list && tabBarList.list.length" class="tab-bar" :style="{ backgroundColor: tabBarList.backgroundColor }">
<view class="tabbar-border"></view>
<view class="item" v-for="(item, index) in tabBarList.list" :key="item.id" @tap.stop="redirectTo(item.link)">
<view class="bd">
<view class="icon" v-if="tabBarList.type == 1 || tabBarList.type == 2"
:animation="isCartItem(item.link) ? cartAnimation : null"
:id="isCartItem(item.link) ? 'tabbarCart' : null">
<block v-if="verify(item.link)">
<image v-if="item.selected_icon_type == 'img'"
:src="$util.img(item.selectedIconPath)" />
<diy-icon v-if="item.selected_icon_type == 'icon'" :icon="item.selectedIconPath"
:value="item.selected_style ? item.selected_style : null"></diy-icon>
</block>
<block v-else>
<image v-if="item.icon_type == 'img'" :src="$util.img(item.iconPath)" />
<diy-icon v-if="item.icon_type == 'icon'" :icon="item.iconPath"
:value="item.style ? item.style : null"></diy-icon>
</block>
<view class="cart-count-mark font-size-activity-tag"
:class="{ max: cartNumber > 99 }"
:style="{ background: 'var(--price-color)' }"
v-if="isCartItem(item.link) && cartNumber > 0">
{{ cartNumber > 99 ? '99+' : cartNumber }}
</view>
</view>
</view>
<view class="label"
v-if="(tabBarList.type == 1 || tabBarList.type == 3) && tabBarList.theme == 'diy'"
:style="{ color: verify(item.link) ? tabBarList.textHoverColor : tabBarList.textColor }">
@@ -38,7 +43,7 @@
</view>
</view>
</view>
<!-- 解决fixed定位后底部导航栏塌陷问题 -->
<!-- 解决fixed定位后底部导航栏塌陷问题: 始终保留 placeholder, 避免内容随 tabBar 可见性跳 -->
<view class="tab-bar-placeholder"></view>
</view>
</template>

7
components-diy/diy-category.vue
View File

@@ -323,6 +323,13 @@ export default {
* 加防御性检查,避免上线后第一次进入崩溃
*/
getHeightArea(index) {
// 节流: 500ms 内的重复请求复用上次结果, 避免每次 onShow 都跑 selectAll 触发频闪
const now = Date.now();
if (this._lastHeightAreaTime && now - this._lastHeightAreaTime < 500 && this.heightArea && this.heightArea.length) {
if (index != -1 && index < this.categoryTree.length - 1 && Array.isArray(this.$refs.categoryItem) && this.$refs.categoryItem[index + 1]) this.$refs.categoryItem[index + 1].getGoodsList();
return;
}
this._lastHeightAreaTime = now;
let heightArea = [];
if (!query || typeof query.selectAll !== 'function') {
query = uni.createSelectorQuery && uni.createSelectorQuery().in(this);