计算购物车钱之前

stores/navbarStore.js

@@ -13,7 +13,8 @@ export const useNavbarStore = defineStore('navbar', {
 		isTransparent: false,
 		height: 0,
 		hasPlaceholder: true,
-		scrollTop: 0 //滚动高度
+		scrollTop: 0 ,//滚动高度
+		screenHeight:375
 	}),
 	actions: {
 		updateNavbarConfig(config) {
@@ -23,21 +24,21 @@ export const useNavbarStore = defineStore('navbar', {
 			uni.getSystemInfo({
 				success: (res) => {
 					const statusBarHeight = res.statusBarHeight;
+					// 总高度
+					this.screenHeight = res.screenHeight
 					let navBarHeight;
-
 					// 微信小程序的特殊处理
-					if (res.platform === 'weapp') {
+					if (res.uniPlatform === 'mp-weixin' || res.uniPlatform === 'mp-alipay') {
 						const menuButtonInfo = uni.getMenuButtonBoundingClientRect();
 						const topGap = menuButtonInfo.top - statusBarHeight;
 						const bottomGap = statusBarHeight + menuButtonInfo.height + topGap * 2 - (
 							menuButtonInfo.top + menuButtonInfo.height);
-						navBarHeight = menuButtonInfo.height + topGap + bottomGap;
+						navBarHeight = menuButtonInfo.height + topGap + bottomGap - 4;
 					} else if (uni.getSystemInfoSync().platform === 'ios') {
 						navBarHeight = 44;
 					} else {
 						navBarHeight = 48;
 					}
-
 					this.height = statusBarHeight + navBarHeight;
 				},
 				fail: (err) => {