# JSONata

JSON query and transformation language

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Reference implementation of the [JSONata query and transformation language](http://jsonata.org/).

* [JSONata in 5 minutes](https://www.youtube.com/embed/ZBaK40rtIBM)
* [JSONata language documentation](http://docs.jsonata.org/)
* [Try it out!](http://try.jsonata.org/)

## Installation

- `npm install jsonata`

## Quick start

In Node.js:

```javascript
var jsonata = require("jsonata");

var data = {
  example: [
    {value: 4},
    {value: 7},
    {value: 13}
  ]
};
var expression = jsonata("$sum(example.value)");
var result = expression.evaluate(data);  // returns 24
```

In a browser:

```html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>JSONata test</title>
    <script src="https://cdn.jsdelivr.net/npm/jsonata/jsonata.min.js"></script>
    <script>
      function greeting() {
        var json = JSON.parse(document.getElementById('json').value);
        var result = jsonata('"Hello, " & name').evaluate(json);
        document.getElementById('greeting').innerHTML = result;
      }
    </script>
  </head>
  <body>
    <textarea id="json">{ "name": "Wilbur" }</textarea>
    <button onclick="greeting()">Click me</button>
    <p id="greeting"></p>
  </body>
</html>
```

## More information
- JSONata [documentation](http://docs.jsonata.org/)
- [JavaScript API](http://docs.jsonata.org/embedding-extending)
- [Intro talk](https://www.youtube.com/watch?v=TDWf6R8aqDo) at London Node User Group

## Contributing

See the [CONTRIBUTING.md](CONTRIBUTING.md) for details of how to contribute to this repo.
