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@uiw/react-json-view

JSON viewer for react.

  • 1.8.4
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react-json-view

CI npm version NPM Downloads react@^18 Coverage Status

A React component for displaying and editing javascript arrays and JSON objects.

react-json-view react-json-view

Features

šŸ“š Use Typescript to write, better code hints.
šŸŽØ Support theme customization & online editing theme
šŸŒ’ Support dark/light mode
šŸ“¦ Zero dependencies
šŸ“‹ Copy to Clipboard
āœļø Support editing and adding features
ā™»ļø Whether to highlight updates.

Quick Start

npm install @uiw/react-json-view
import JsonView from '@uiw/react-json-view';
import JsonViewEditor from '@uiw/react-json-view/editor';
import { lightTheme } from '@uiw/react-json-view/light';
import { darkTheme } from '@uiw/react-json-view/dark';
import { TriangleArrow } from '@uiw/react-json-view/triangle-arrow';
import { TriangleSolidArrow } from '@uiw/react-json-view/triangle-solid-arrow';
import JsonView from '@uiw/react-json-view';

const avatar = 'https://i.imgur.com/MK3eW3As.jpg';
const longArray = new Array(1000).fill(1);
const example = {
  avatar,
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  float: 114.514,
  bigint: 10086n,
  null: null,
  undefined,
  timer: 0,
  date: new Date('Tue Sep 13 2022 14:07:44 GMT-0500 (Central Daylight Time)'),
  array: [19, 100.86, 'test', NaN, Infinity],
  nestedArray: [
    [1, 2],
    [3, 4],
  ],
  object: {
    'first-child': true,
    'second-child': false,
    'last-child': null,
  },
  longArray,
  string_number: '1234',
};

<JsonView value={example} />

Theme

By default, the lightTheme light theme is used, and a darkTheme dark theme configuration is built in

import React from 'react';
import JsonView from '@uiw/react-json-view';
import { lightTheme } from '@uiw/react-json-view/light';
import { darkTheme } from '@uiw/react-json-view/dark';

const object = {
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  float: 114.514,
}

export default function Demo() {
  return (
    <React.Fragment>
      <JsonView value={object} style={darkTheme} />
      <JsonView value={object} style={lightTheme} />
    </React.Fragment>
  )
}

Example of custom vscode theme styles:

import React from 'react';
import JsonView from '@uiw/react-json-view';

const object = {
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  float: 114.514,
  object: {
    'first-child': true,
    'second-child': false,
    'last-child': null,
  },
}
const customTheme = {
  '--w-rjv-font-family': 'monospace',
  '--w-rjv-color': '#9cdcfe',
  '--w-rjv-background-color': '#1e1e1e',
  '--w-rjv-line-color': '#323232',
  '--w-rjv-arrow-color': 'var(--w-rjv-color)',
  '--w-rjv-edit-color': 'var(--w-rjv-color)',
  '--w-rjv-add-color': 'var(--w-rjv-color)',
  '--w-rjv-delete-color': '#dc3545',
  '--w-rjv-info-color': '#656565',
  '--w-rjv-update-color': '#ebcb8b',
  '--w-rjv-copied-color': '#9cdcfe',
  '--w-rjv-copied-success-color': '#28a745',

  '--w-rjv-curlybraces-color': '#d4d4d4',
  '--w-rjv-brackets-color': '#d4d4d4',

  '--w-rjv-type-string-color': '#ce9178',
  '--w-rjv-type-int-color': '#268bd2',
  '--w-rjv-type-float-color': '#859900',
  '--w-rjv-type-bigint-color': '#268bd2',
  '--w-rjv-type-boolean-color': '#559bd4',
  '--w-rjv-type-date-color': '#586e75',
  '--w-rjv-type-url-color': '#649bd8',
  '--w-rjv-type-null-color': '#d33682',
  '--w-rjv-type-nan-color': '#859900',
  '--w-rjv-type-undefined-color': '#586e75',
};

export default function Demo() {
  return (
    <JsonView value={object} keyName="root" style={customTheme} />
  )
}

Online Editing Theme

Online custom style example, please check in the documentation website

import React, { useState, useEffect } from 'react';
import Colorful from '@uiw/react-color-colorful';
import JsonView from '@uiw/react-json-view/editor';

const object = {
  avatar: 'https://i.imgur.com/MK3eW3As.jpg',
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  float: 114.514,
  bigint: 10086n,
  null: null,
  undefined,
  timer: 0,
  url: new URL('https://example.com'),
  date: new Date('Tue Sep 13 2022 14:07:44 GMT-0500 (Central Daylight Time)'),
  array: [19, 100.86, 'test', NaN, Infinity],
  nestedArray: [
    [1, 2],
    [3, 4],
  ],
  object: {
    'first-child': true,
    'second-child': false,
    'last-child': null,
  },
  string_number: '1234',
}
const customTheme = {
  '--w-rjv-color': '#9cdcfe',
  '--w-rjv-background-color': '#1e1e1e',
  '--w-rjv-line-color': '#323232',
  '--w-rjv-arrow-color': '#9cdcfe',
  '--w-rjv-edit-color': '#0184a6',
  '--w-rjv-add-color': '#0184a6',
  '--w-rjv-delete-color': '#dc3545',
  '--w-rjv-info-color': '#656565',
  '--w-rjv-update-color': '#ebcb8b',
  '--w-rjv-copied-color': '#0184a6',
  '--w-rjv-copied-success-color': '#28a745',

  '--w-rjv-curlybraces-color': '#d4d4d4',
  '--w-rjv-brackets-color': '#d4d4d4',

  '--w-rjv-type-string-color': '#ce9178',
  '--w-rjv-type-int-color': '#268bd2',
  '--w-rjv-type-float-color': '#859900',
  '--w-rjv-type-bigint-color': '#268bd2',
  '--w-rjv-type-boolean-color': '#559bd4',
  '--w-rjv-type-date-color': '#586e75',
  '--w-rjv-type-url-color': '#0969da',
  '--w-rjv-type-null-color': '#d33682',
  '--w-rjv-type-nan-color': '#859900',
  '--w-rjv-type-undefined-color': '#586e75',
};

export default function Demo() {
  const [cssvar, setCssvar] = useState('--w-rjv-background-color');
  const [hex, setHex] = useState("#1e1e1e");
  const [editable, setEditable] = useState(false);
  const [theme, setTheme] = useState(customTheme);
  const onChange = ({ hexa }) => {
    setHex(hexa);
    setTheme({ ...theme, [cssvar]: hexa });
  };

  const [src, setSrc] = useState({ ...object })
  useEffect(() => {
    const loop = () => {
      setSrc(src => ({
        ...src,
        timer: src.timer + 1
      }))
    }
    const id = setInterval(loop, 1000)
    return () => clearInterval(id)
  }, []);

  const changeEditable = (evn) => setEditable(evn.target.checked);
  return (
    <React.Fragment>
      <label>
        <input type="checkbox" checked={editable} onChange={changeEditable} /> Editable
      </label>
      <div style={{ display: 'flex', gap: '1rem', alignItems: 'flex-start' }}>
        <JsonView
          editable={editable}
          value={src}
          keyName="root"
          onAdd={(keyOrValue, newValue, value, isAdd) => {
            return isAdd;
          }}
          onEdit={(opts) => {
            return true;
          }}
          style={{ flex: 1, overflow: 'auto', ...theme }}
        />
        <div>
          <Colorful color={hex} onChange={onChange} />
          <div style={{ display: 'flex', gap: '0.4rem', flexDirection: 'column' }}>
            {Object.keys(customTheme).map((varname, idx) => {
              const click = () => {
                setCssvar(varname);
                setHex(customTheme[varname]);
              };
              const active = cssvar === varname ? '#a8a8a8' : '';
              return <button key={idx} style={{ background: active, border: 0,boxShadow: 'inset 0px 0px 1px #000', textAlign: 'left' }} onClick={click}>{varname}</button>
            })}
          </div>
        </div>
      </div>
      Copy the theme configuration below into your project.
      <pre>
        {JSON.stringify(theme, null, 2)}
      </pre>
    </React.Fragment>
  )
}

Render

Preview Picture

import React from 'react';
import JsonView from '@uiw/react-json-view';

const object = {
  avatar: 'https://i.imgur.com/MK3eW3As.jpg',
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
}

function value({ type, children, value, setValue, keyName, parentValue, visible, ...props }) {
  if (type === 'string' && /\.(jpg)$/.test(value)) {
    return (
      <span {...props}>
        <img src={value} height="36" />
      </span>
    );
  }
}

export default function Demo() {
  return (
    <JsonView
      value={object}
      keyName="root"
      // quotes=""
      displayObjectSize={false}
      displayDataTypes={false}
      style={{
        '--w-rjv-background-color': '#ffffff',
      }}
      components={{ value }}
    />
  )
}

Support for the URL(opens in a new tab) API.

import React from 'react';
import JsonView from '@uiw/react-json-view';

export default function Demo() {
  return (
    <JsonView
      value={{
        url: new URL('https://example.com?t=12'),
        urlStr: "https://example.com",
        github: "https://example.com",
      }}
      style={{
        '--w-rjv-background-color': '#ffffff',
      }}
    />
  )
}
import React from 'react';
import JsonView from '@uiw/react-json-view';

function value({ type, children, visible, keyName, parentValue, value, setValue, ...props }) {
  if (value instanceof URL) {
    return (
      <span {...props}>
        <a href={value.href} target="_blank" rel="noopener noreferrer">
          {children}
        </a>
        &nbsp;Open URL
        {visible && <del>Button</del>}
      </span>
    );
  }
}

export default function Demo() {
  return (
    <JsonView
      value={{
        url: new URL('https://example.com?t=12'),
        urlStr: "https://example.com",
        github: "https://example.com",
      }}
      components={{ value }}
      style={{
        '--w-rjv-background-color': '#ffffff',
      }}
    />
  )
}

Inspector

import React from 'react';
import JsonView from '@uiw/react-json-view';

const object = [
  {
    "_id": "56dcf573b09c217d39fd7621",
    "name": "Howard Christensen",
    "email": "howardchristensen@gmail.com",
    "phone": "+1 (830) 529-3176",
    "address": "511 Royce Street, Hilltop, Tennessee, 9712"
  },
  {
    "_id": "56dcf57323630b06251e93cd",
    "name": "Eleanor Lynn",
    "email": "eleanorlynn@gmail.com",
    "phone": "+1 (911) 576-2345",
    "address": "547 Dearborn Court, Trona, California, 8629"
  },
  {
    "_id": "56dcf5738279cac6b081e512",
    "name": "Baxter Mooney",
    "email": "baxtermooney@gmail.com",
    "phone": "+1 (954) 456-3456",
    "address": "349 Cumberland Walk, Washington, Alaska, 3154"
  },
  {
    "_id": "56dcf57303accabd43740957",
    "name": "Calhoun Tyson",
    "email": "calhountyson@gmail.com",
    "phone": "+1 (818) 456-2529",
    "address": "367 Lyme Avenue, Ladera, Louisiana, 6292"
  },
]

const customTheme = {
  '--w-rjv-background-color': '#fff',
  '--w-rjv-border-left-width': 0,
  '--w-rjv-color': '#881391',
  '--w-rjv-type-int-color': '#881391',
};

export default function Demo() {
  return (
    <JsonView
      value={object}
      style={customTheme}
      quotes=""
      enableClipboard={false}
      displayDataTypes={false}
      components={{
        braces: ({ level }) => level !== 1 && <span />,
        countInfo: ({ level, count, visible }) => {
          if (level === 1) {
            return <span />;
            //return visible ? <span>{Array.from({ length: 3 }, () => 'Object').join(', ')}</span> : <span />
          }
          return <span style={{ color: '#222' }}>Object</span>;
        },
        ellipsis: ({ level, count }) => {
          if (level === 1) {
            return <span>{Array.from({ length: 3 }, () => 'Object').join(', ')}</span>;
          }
          return <span />;
        },
      }}
    />
  );
}

Editor JSON

import React from 'react';
import JsonViewEditor from '@uiw/react-json-view/editor';

const object = {
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  float: 114.514,
  object: {
    'first-child': true,
    'second-child': false,
    'last-child': null,
    'child': {
      'first': true,
      'second': false,
      'last': null,
    },
  },
  nestedArray: [ [1, 2], [3, 4], { a: 1} ],
}

const ObjectKey = ({ value, keyName, parentName, parentValue, ...reset }) => {
  if (keyName === 'integer' && typeof value === 'number' && value > 40) {
    return <del {...reset} />
  }
  return <span {...reset} />
};

export default function Demo() {
  return (
    <JsonViewEditor
      value={object}
      keyName="root"
      style={{
        '--w-rjv-background-color': '#ffffff',
      }}
      onEdit={(opts) => {
        console.log('opts:', opts)
        // opts.namespace: ['object', 'child', 'last']
        // opts.oldValue: null
        // opts.type: "value"
        // opts.value: "NULL3"
        return true;
      }}
      components={{
        objectKey: ObjectKey
      }}
    />
  );
}

Highlight Updates

import React, { useState, useEffect } from 'react';
import JsonView from '@uiw/react-json-view';

const object = {
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  timer: 0,
  object: { 'first-child': true, 'second-child': false, 'last-child': null },
}
export default function Demo() {
  const [src, setSrc] = useState({ ...object })
  useEffect(() => {
    const loop = () => {
      setSrc(src => ({
        ...src,
        timer: src.timer + 1
      }))
    }
    const id = setInterval(loop, 1000)
    return () => clearInterval(id)
  }, []);

  return (
    <JsonView
      value={src}
      keyName="root"
      style={{
        '--w-rjv-background-color': '#ffffff',
        '--w-rjv-border-left': '1px dashed #ebebeb',
        // āœ… Change default update background color āœ…
        '--w-rjv-update-color': '#ff6ffd',
      }}
    />
  )
}

This feature can be disabled with highlightUpdates={false}, and the default color can be changed with --w-rjv-update-color.

Modify Icon Style

Use built-in default icons.

import React from 'react';
import JsonView from '@uiw/react-json-view';
import { TriangleArrow } from '@uiw/react-json-view/triangle-arrow';
import { TriangleSolidArrow } from '@uiw/react-json-view/triangle-solid-arrow';

const object = {
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  float: 114.514,
  object: {
    'first-child': true,
    'second-child': false,
    'last-child': null,
  },
  nestedArray: [
    [1, 2],
    [3, 4],
  ],
}
export default function Demo() {
  return (
    <JsonView
      value={object}
      keyName="root"
      style={{
        '--w-rjv-background-color': '#ffffff',
        '--w-rjv-border-left': '1px dashed #ebebeb',
      }}
      components={{
        arrow: <TriangleSolidArrow />
      }}
    />
  )
}

Display of custom svg icon components

import React from 'react';
import JsonView from '@uiw/react-json-view';

const object = {
  string: 'Lorem ipsum dolor sit amet',
  integer: 42,
  float: 114.514,
  object: {
    'first-child': true,
    'second-child': false,
    'last-child': null,
  },
  nestedArray: [
    [1, 2],
    [3, 4],
  ],
}

const Arrow = (props) => {
  const { style, 'data-expand': expand, ...reset } = props;
  const svgProps = {
    style: { cursor: 'pointer', height: '1em', width: '1em' },
    viewBox: '0 0 24 24',
    fill: 'var(--w-rjv-arrow-color, currentColor)',
    ...reset
  }
  if (!expand) {
    return (
      <svg {...svgProps}>
        <path d="M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20,12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M13,7H11V11H7V13H11V17H13V13H17V11H13V7Z" />
      </svg>
    );
  }
  return (
    <svg {...svgProps}>
      <path d="M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20,12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M7,13H17V11H7" />
    </svg>
  );
}

export default function Demo() {
  return (
    <JsonView
      value={object}
      keyName="root"
      style={{
        '--w-rjv-background-color': '#ffffff',
        '--w-rjv-border-left': '1px dashed #ebebeb',
      }}
      components={{
        arrow: <Arrow />
      }}
    />
  )
}

Props

JsonView Props

import React from 'react';
import { MetaProps, SemicolonProps, EllipsisProps, ValueViewProps } from '@uiw/react-json-view';
import type { CountInfoExtraProps } from '@uiw/react-json-view/cjs/editor/countInfoExtra';
export interface JsonViewProps<T> extends React.DetailedHTMLProps<React.HTMLAttributes<HTMLDivElement>, HTMLDivElement> {
  /** This property contains your input JSON */
  value?: T;
  /** Set the indent-width for nested objects @default 15 */
  indentWidth?: number;
  /** When set to `true`, data type labels prefix values @default true */
  displayDataTypes?: boolean;
  /** When set to `true`, `objects` and `arrays` are labeled with size @default true */
  displayObjectSize?: boolean;
  /** Define the root node name. @default undefined */
  keyName?: string | number;
  /** The user can copy objects and arrays to clipboard by clicking on the clipboard icon. @default true */
  enableClipboard?: boolean;
  /** Whether to highlight updates. @default true */
  highlightUpdates?: boolean;
  /** Whether sort keys through `String.prototype.localeCompare()` @default false */
  objectSortKeys?: boolean | ((a: string, b: string) => number);
  /** Display for quotes in object-key @default " */
  quotes?: "'" | '"' | '';
  /** When set to true, all nodes will be collapsed by default. Use an integer value to collapse at a particular depth. @default false */
  collapsed?: boolean | number;
  /** Callback function for when a treeNode is expanded or collapsed */
  onExpand?: (props: {
    expand: boolean;
    value: T;
    keyid: string;
    keyName?: string | number;
  }) => void;
  /** Fires event when you copy */
  onCopied?: CopiedProps<T>['onCopied'];
  /** Redefine interface elements to re-render. */
  components?: {
    braces?: MetaProps['render'];
    ellipsis?: EllipsisProps['render'];
    arrow?: JSX.Element;
    objectKey?: SemicolonProps['render'];
    value?: (props: RenderValueProps<T>) => JSX.Element;
    copied?: CopiedProps<T>['render'];
    countInfo?: (props: CountInfoProps) => JSX.Element;
    countInfoExtra?: (props: Omit<CountInfoExtraProps<T>, 'editable'>) => JSX.Element;
  };
}
interface RenderValueProps<T extends object> extends React.HTMLAttributes<HTMLSpanElement> {
  type: TypeProps['type'];
  value?: unknown;
  parentValue?: T;
  data?: T;
  visible?: boolean;
  quotes?: JsonViewProps<T>['quotes'];
  namespace?: Array<string | number>;
  setValue?: React.Dispatch<React.SetStateAction<T>>;
  keyName?: ValueViewProps<T>['keyName'];
}
declare const JsonView: React.ForwardRefExoticComponent<Omit<JsonViewProps<object>, "ref"> & React.RefAttributes<HTMLDivElement>>;
export default JsonView;
export interface CountInfoProps {
  count: number;
  level: number;
  visible: boolean;
}

JsonView Editor Props

import { JsonViewProps } from '@uiw/react-json-view';
import type { CountInfoExtraProps } from '@uiw/react-json-view/cjs/editor/countInfoExtra';
export interface JsonViewEditorProps<T extends object> extends JsonViewProps<T> {
  /**
   * When a callback function is passed in, edit functionality is enabled. The callback is invoked before edits are completed.
   * @returns {boolean}  Returning false from onEdit will prevent the change from being made.
   */
  onEdit?: (option: {
    value: unknown;
    oldValue: unknown;
    keyName?: string | number;
    parentName?: string | number;
    namespace?: Array<string | number>;
    type?: 'value' | 'key';
  }) => boolean;
  /**
   * When a callback function is passed in, add functionality is enabled. The callback is invoked before additions are completed.
   * @returns {boolean} Returning false from onAdd will prevent the change from being made.
   */
  onAdd?: CountInfoExtraProps<T>['onAdd'];
  /**
   * When a callback function is passed in, delete functionality is enabled. The callback is invoked before deletions are completed.
   * @returns Returning false from onDelete will prevent the change from being made.
   */
  onDelete?: CountInfoExtraProps<T>['onDelete'];
  /** Whether enable edit feature. @default true */
  editable?: boolean;
}
declare const JsonViewEditor: import("react").ForwardRefExoticComponent<Omit<JsonViewEditorProps<object>, "ref"> & import("react").RefAttributes<HTMLDivElement>>;
export default JsonViewEditor;

Size and dependencies

Here is the size benchmark (using bundlephobia.com) against similar React libraries (found by npmjs.com/search):

LibraryBundle size (gzip)DepsLast commitDownloadEditable
@uiw/react-json-view GitHub last commitNPM Downloadsāœ…
react-json-view-lite GitHub last commitNPM DownloadsāŒ
react-json-pretty GitHub last commitNPM DownloadsāŒ
react-json-inspector GitHub last commitNPM DownloadsāŒ
react-json-tree GitHub last commitNPM DownloadsāŒ
react-json-view GitHub last commitNPM Downloadsāœ…
react-json-tree-viewer GitHub last commitNPM DownloadsāŒ
react-inspector GitHub last commitNPM DownloadsāŒ
react-domify GitHub last commitNPM DownloadsāŒ
react18-json-view GitHub last commitNPM DownloadsāŒ
@textea/json-viewer GitHub last commitNPM Downloadsāœ…

Development

Runs the project in development mode.

# Step 1, run first, listen to the component compile and output the .js file
# listen for compilation output type .d.ts file
npm run watch
# Step 2, development mode, listen to compile preview website instance
npm run start

Builds the app for production to the build folder.

npm run build

The build is minified and the filenames include the hashes. Your app is ready to be deployed!

Contributors

As always, thanks to our amazing contributors!

Made with action-contributors.

License

Licensed under the MIT License.

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FAQs

Package last updated on 14 Aug 2023

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Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

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