在小程序项目中app.json配置文件下，添加代码：
"tabBar": {
"color": "#a9b7b7",
"selectedColor": "#11cd6e",
"borderStyle":"white",
"list": [{
"selectedIconPath": "images/111.png",
"iconPath": "images/11.png",
"pagePath": "pages/index/index",
"text": "首页"
}, {
"selectedIconPath": "images/221.png",
"iconPath": "images/22.png",
"pagePath": "pages/logs/logs",
"text": "日志"
}, {
"selectedIconPath": "images/331.png",
"iconPath": "images/33.png",
"pagePath": "pages/test/test",
"text": "测试"
}]
},
