微信小程序全局配置开发实例

一.app.json

使用app.json文件来对微信小程序进行全局配置，决定页面文件的路径、窗口表现、设置网络超时时间、设置多 tab 等.

二.工具栏tabBar

如果我们的小程序是一个多 tab 应用（客户端窗口的底部或顶部有 tab 栏可以切换页面），那么我们可以通过 tabBar 配置项指定 tab 栏的表现，以及 tab 切换时显示的对应页面。

tabBar 是一个数组，只能配置最少2个、最多5个 tab，tab 按数组的顺序排序

app.json中

{
	"pages": ["pages/index/index", 
	           "pages/coming/coming",
	           "pages/search/search",
	           "pages/top/top"
         ],
	"window": {
		"navigationBarBackgroundColor": "#47a86c",
	    "navigationBarTextStyle": "white",
	    "navigationBarTitleText":  "小程序案例",
	    "backgroundColor": "#fff",
	    "backgroundTextStyle": "dark"
	},
	"tabBar": {
		"color": "#686868",
		"selectedColor": "#47a86c",
		"backgroundColor": "#fff",
		"list": [{
			"pagePath": "pages/index/index",
			"iconPath": "dist/images/popular_icon.png",
      		"selectedIconPath": "dist/images/popular_active_icon.png",
			"text": "热映"
		}, 
		{
			"pagePath": "pages/coming/coming",
			"iconPath": "dist/images/coming_icon.png",
      		"selectedIconPath": "dist/images/coming_active_icon.png",
			"text": "待映"
		},
		{
			"pagePath": "pages/search/search",
			"iconPath": "dist/images/search_icon.png",
      		"selectedIconPath": "dist/images/search_active_icon.png",
			"text": "搜索"
		},
		{
			"pagePath": "pages/top/top",
			"iconPath": "dist/images/top_icon.png",
      		"selectedIconPath": "dist/images/top_active_icon.png",
			"text": "口碑"
		}]
	},
	"networkTimeout": {
		"request": 10000,
		"downloadFile": 10000
	},
	"debug": true
}

app.json中其他属性：可以查看手册，里面有详解。