<!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>Range</title> <link rel="stylesheet" id="theme-link" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"> <link rel="stylesheet" id="iconlib-link" href="https://use.fontawesome.com/releases/v5.6.1/css/all.css"> <script src="https://cdn.jsdelivr.net/npm/mathjs@5.3.1/dist/math.min.js" class="external_mathjs"></script> <script src="../../dist/jsoneditor.js"></script> </head> <body> <div class="container"> <textarea class="value form-control" rows="10"></textarea> <button class='get-value'>Get Value</button> <button class='set-value'>Set Value</button> <div class='json-editor-container'></div> </div> <script> var jsonEditorContainer = document.querySelector('.json-editor-container'); var value = document.querySelector('.value'); var schema = { "title": "Settings", "type": "object", "properties": { "speed": { "title": "speed", "description": "1 - Slowest, 10 - Fastest", "type": "integer", "minimum": 1, "maximum": 10, "format": "range" } } } var editor = new JSONEditor(jsonEditorContainer, { schema: schema, theme: 'bootstrap4', use_default_values: false, required_by_default: true, show_errors: 'always' }); document.querySelector('.get-value').addEventListener('click', function () { value.value = JSON.stringify(editor.getValue()); console.log(editor.getValue()); }); document.querySelector('.set-value').addEventListener('click', function () { editor.setValue({number_range: 2}) }); </script> </body> </html>