How to customize error information

[jingyuLin1999]

How to customize error information in schema？
like this:

{
    "userName": {
      "type": "string",
      "minLength": 1,
      "require": true,
      "pattern": "\\d+_\\d+_\\d+",
      "message":"ERROR MESSAGE"
    },
}

[karlguillotte]

You can use https://github.com/ajv-validator/ajv-errors

[epoberezkin]

Thank you! Closing it.

[jingyuLin1999]

Thanks for you reply. it resolve my issue, however ajv-validator/ajv-errors have the same issue in IE11.
How to resolve it?
Look forward to your reply.