examples/17_on_event_api.html

<!DOCTYPE HTML>
<html lang="en">
<head>
  <meta charset="utf-8">

  <link href="../dist/jsoneditor.css" rel="stylesheet" type="text/css">
  <script src="../dist/jsoneditor.js"></script>

  <style type="text/css">
    body {
      font: 10.5pt arial;
      color: #4d4d4d;
      line-height: 150%;
      width: 500px;
      padding-left: 40px;
    }

    code {
      background-color: #f5f5f5;
    }

    #jsoneditor {
      width: 500px;
      height: 500px;
    }
  </style>
</head>
<body>

<p>
  When clicking on a JSON field or value, a log message will be shown in
  console.
</p>

<form>
  <div id="jsoneditor"></div>
</form>

<script>
  const container = document.getElementById('jsoneditor')

  const options = {
    mode: 'tree',
    modes: ['code', 'form', 'text', 'tree', 'view', 'preview'], // allowed modes
    name: "jsonContent",
    onEvent: function(node, event) {
      if (node.value !== undefined) {
        console.log(event.type + ' event ' +
          'on value ' + JSON.stringify(node.value) + ' ' +
          'at path ' + JSON.stringify(node.path)
        )
      } else {
        console.log(event.type + ' event ' +
          'on field ' + JSON.stringify(node.field) + ' ' +
          'at path ' + JSON.stringify(node.path)
        )
      }
    }
  }

  const json = {
    "array": [1, 2, [3,4,5]],
    "boolean": true,
    "htmlcode": '&quot;',
    "escaped_unicode": '\\u20b9',
    "unicode": '\u20b9,\uD83D\uDCA9',
    "return": '\n',
    "null": null,
    "number": 123,
    "object": {"a": "b", "c": "d", "e": [1, 2, 3]},
    "string": "Hello World",
    "url": "http://jsoneditoronline.org",
    "[0]": "zero"
  }

  window.editor = new JSONEditor(container, options, json)

  console.log('json', json)
  console.log('string', JSON.stringify(json))
</script>
</body>
</html>