sheetjs/demos/function/local.settings.json

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "AzureWebJobsDashboard": "UseDevelopmentStorage=true"
  },
  "Host": {
    "LocalHttpPort": 7262,
    "CORS": "*"
  }
}