{
  "navigationBarBackgroundColor": "#fff",
  "navigationStyle": "custom",
  "handleWebviewPreload": "manual",
  "usingComponents": {
    "van-search": "@vant/weapp/search/index",
    "van-dropdown-menu": "@vant/weapp/dropdown-menu/index",
    "van-dropdown-item": "@vant/weapp/dropdown-item/index"
  }

}