How can I validate JSON data in real-time?

How can I validate JSON data in real-time?

You can use libraries like Ajv or Joi in JavaScript to validate JSON data as it is being inputted.

Can you show me an example of using Ajv for validation?

Sure! Here's a simple example:

const Ajv = require('ajv');
const ajv = new Ajv();

const schema = {
  type: 'object',
  properties: {
    name: { type: 'string' },
    age: { type: 'integer' }
  },
  required: ['name', 'age']
};

const validate = ajv.compile(schema);

const data = { name: 'John', age: 30 };
const valid = validate(data);
if (!valid) console.log(validate.errors);
else console.log('Valid JSON!');

What if the JSON data is invalid?

If the JSON data is invalid, the validate.errors will provide detailed information about what went wrong.

Are there any other libraries for JSON validation?

Yes, besides Ajv, you can also use Joi, Yup, or JSON Schema Validator for different use cases.