首页小程序导航栏TabBar设置

1、注意区分属性值大小写的区别，比如selectedIconPath如果写成selectediconpath则图片不显示。

2、如果tabBar中设置"postion":"top"则icopath的图片都不再显示。

3、注意{}中如果列出几项，这除最后一项外每一项结尾加逗号，最后一项不用加。

"tabBar": {

    "selectedColor": "#1296db",

    "list": [{

      "pagePath": "pages/index/index",

      "text": "首页",

      "iconPath": "images/ico-home.png",

      "selectedIconPath": "images/ico-home-d.png"

    },{

      "pagePath": "pages/setting/setting",

      "text": "设置",

      "iconPath": "images/ico-setting.png",

      "selectedIconPath": "images/ico-setting-d.png"

    },{

      "pagePath": "pages/help/help",

      "text": "帮助",

      "iconPath": "images/ico-help.png",

      "selectedIconPath": "images/ico-help-d.png"

    }]

  }