jsoneditor/docs/api.md

API Reference

JSONEditor

Constructor

JSONEditor(container [, options] [, json])

Constructs a new JSONEditor.

Parameters:

• {Element} container
  An HTML DIV element. The JSONEditor will be created inside this container element.

• {Object} options
  Optional object with options. Available options:

  • {function} change
    Set a callback method triggered when the contents of the JSONEditor change. Called without parameters.
  • {function} editable
    Set a callback method to determine whether individual nodes are editable or read-only. Only applicable when option mode is tree. The callback is invoked as editable(node), where node is an object {field: string, value: string, path: string[]}. The function must either return a boolean value to set both the nodes field and value editable or read-only, or return an object {field: boolean, value: boolean}.
  • {function} error
    Set a callback method triggered when an error occurs. Invoked with the error as first argument. The callback is only invoked for errors triggered by a users action.
  • {boolean} history
    Enables history, adds a button Undo and Redo to the menu of the JSONEditor. True by default. Only applicable when mode is 'tree' or 'form'.
  • {String} mode
    Set the editor mode. Available values: 'tree' (default), 'view', 'form', 'code', 'text'. In 'view' mode, the data and datastructure is read-only. In 'form' mode, only the value can be changed, the datastructure is read-only. Mode 'code' requires the Ace editor to be loaded on the page. Mode 'text' shows the data as plain text.
  • {String[]} modes
    Create a box in the editor menu where the user can switch between the specified modes. Available values: see option mode.
  • {String} name
    Initial field name for the root node, is undefined by default. Can also be set using JSONEditor.setName(name). Only applicable when mode is 'tree', 'view', or 'form'.
  • {boolean} search
    Enables a search box in the upper right corner of the JSONEditor. True by default. Only applicable when mode is 'tree', 'view', or 'form'.
  • {Number} indentation
    Number of indentation spaces. 2 by default. Only applicable when mode is 'code' or 'text'.

• {JSON} json
  Initial JSON data to be loaded into the JSONEditor. Alternatively, the method JSONEditor.set(json) can be used to load JSON data into the editor.

Returns:

• {JSONEditor} editor
  New instance of a JSONEditor.

Methods

JSONEditor.collapseAll()

Collapse all fields. Only applicable for mode 'tree', 'view', and 'form'.

JSONEditor.expandAll()

Expand all fields. Only applicable for mode 'tree', 'view', and 'form'.

JSONEditor.set(json)

Set JSON data.

Parameters:

• {JSON} json JSON data to be displayed in the JSONEditor.

JSONEditor.setMode(mode)

Switch mode. Mode code requires the Ace editor.

Parameters:

• {String} mode
  Available values: tree, 'view', form, code, text.

JSONEditor.setName(name)

Set a field name for the root node.

Parameters:

• {String | undefined} name
  Field name of the root node. If undefined, the current name will be removed.

JSONEditor.setText(jsonString)

Set text data in the formatter.

Parameters:

• {String} jsonString
  Contents of the JSONformatter as string.

JSONEditor.get()

Get JSON data.

Returns:

• {JSON} json
  JSON data from the JSONEditor.

JSONEditor.getName()

Retrieve the current field name of the root node.

Returns:

• {String | undefined} name
  Current field name of the root node, or undefined if not set.

JSONEditor.getText()

Get JSON data as string.

Returns:

• {String} jsonString
  Contents of the JSONformatter as string.

Examples

A tree editor:

var options = {
    "mode": "tree",
    "search": true
};
var editor = new JSONEditor(container, options);
var json = {
    "Array": [1, 2, 3],
    "Boolean": true,
    "Null": null,
    "Number": 123,
    "Object": {"a": "b", "c": "d"},
    "String": "Hello World"
};
editor.set(json);
editor.expandAll();

var json = editor.get(json);

A text editor:

var options = {
    "mode": "text",
    "indentation": 2
};
var editor = new JSONEditor(container, options);
var json = {
    "Array": [1, 2, 3],
    "Boolean": true,
    "Null": null,
    "Number": 123,
    "Object": {"a": "b", "c": "d"},
    "String": "Hello World"
};
editor.set(json);

var json = editor.get(json);

JSON parsing and stringification

In general to parse or stringify JSON data, the browsers built in JSON parser can be used. To create a formatted string from a JSON object, use:

var formattedString = JSON.stringify(json, null, 2);

to create a compacted string from a JSON object, use:

var compactString = JSON.stringify(json);

To parse a String to a JSON object, use:

var json = JSON.parse(string);