@uiw/react-json-view
Advanced tools
A React component for displaying and editing javascript arrays and JSON objects. Preview of v1 documentation is available here.
š Use Typescript to write, better code hints.
šØ Support theme customization & online editing theme
š Support dark/light mode
š¦ Zero dependencies
š Copy to Clipboard
āļø Support editing and adding features
ā»ļø Whether to highlight updates.
The new version v2 has redesigned the API to make the code more maintainable and introduced a simpler and more flexible component customization rendering API. Each component can now have custom rendering, and the new API resembles React more closely.
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} />
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';
import { nordTheme } from '@uiw/react-json-view/nord';
import { githubLightTheme } from '@uiw/react-json-view/githubLight';
import { githubDarkTheme } from '@uiw/react-json-view/githubDark';
import { vscodeTheme } from '@uiw/react-json-view/vscode';
import { gruvboxTheme } from '@uiw/react-json-view/gruvbox';
import { monokaiTheme } from '@uiw/react-json-view/monokai';
import { basicTheme } from '@uiw/react-json-view/basic';
const object = {
string: 'Lorem ipsum dolor sit amet',
integer: 42,
float: 114.514,
boolean: true,
null: null,
nan: NaN,
url: new URL('https://example.com'),
}
const style = { display: 'grid', gap: '1rem', gridTemplateColumns: 'repeat(auto-fill, minmax(250px, 1fr))' };
export default function Demo() {
return (
<div style={style}>
<JsonView value={object} style={darkTheme} />
<JsonView value={object} style={lightTheme} />
<JsonView value={object} style={nordTheme} />
<JsonView value={object} style={githubLightTheme} />
<JsonView value={object} style={githubDarkTheme} />
<JsonView value={object} style={gruvboxTheme} />
<JsonView value={object} style={vscodeTheme} />
<JsonView value={object} style={monokaiTheme} />
<JsonView value={object} style={basicTheme} />
</div>
);
}
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-colon-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 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,
nan: NaN,
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-colon-color': '#f8f8f2',
'--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-nan-color': '#859900',
'--w-rjv-type-undefined-color': '#586e75',
'--w-rjv-type-null-color': '#d33682',
'--w-rjv-type-set-color': '#268bd2',
'--w-rjv-type-map-color': '#268bd2',
};
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>
)
}
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>
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 />;
},
}}
/>
);
}
import React, { useRef } from 'react';
import JsonViewEditor from '@uiw/react-json-view/editor';
import { type SemicolonProps, useHighlight } 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,
'child': {
'first': true,
'second': false,
'last': null,
},
},
nestedArray: [ [1, 2], [3, 4], { a: 1} ],
}
const ObjectKey: SemicolonProps['render'] = ({ value, keyName, parentName, ...props }) => {
const $edit = useRef<HTMLSpanElement & HTMLModElement>(null);
useHighlight({ value, highlightUpdates: true, highlightContainer: $edit });
if (keyName === 'integer' && typeof value === 'number' && value > 40) {
return <del {...props} ref={$edit} />;
}
return <span {...props} ref={$edit} />;
}
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
}}
/>
);
}
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',
// ā
Change default update background color ā
'--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.
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 />
}}
/>
)
}
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;
/** Shorten long JSON strings, Set to `0` to disable this feature @default 30 */
shortenTextAfterLength?: number;
/** 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;
}
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 Omit<JsonViewProps<T>, 'shortenTextAfterLength'> {
/**
* 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;
Here is the size benchmark (using bundlephobia.com) against similar React libraries (found by npmjs.com/search):
| Library | Bundle size (gzip) | Deps | Last commit | Download | Editable |
|---|---|---|---|---|---|
| @uiw/react-json-view |   |  | | ā | |
| react-json-view-lite |   |  |  | ā | |
| react-json-pretty |   |  |  | ā | |
| react-json-inspector |   |  |  | ā | |
| react-json-tree |   |  |  | ā | |
  |  |  | ā | ||
  |  |  | ā | ||
| react-inspector |   |  |  | ā | |
| react-domify |   |  |  | ā | |
| react18-json-view |   |  |  | ā | |
| @textea/json-viewer |   |  |  | ā |
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!
As always, thanks to our amazing contributors!
Made with action-contributors.
Licensed under the MIT License.
FAQs
JSON viewer for react.
The npm package @uiw/react-json-view receives a total of 47,357 weekly downloads. As such, @uiw/react-json-view popularity was classified as popular.
We found that @uiw/react-json-view demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago.Ā It has 2 open source maintainers collaborating on the project.
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The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
Research
Security News
Attackers used a malicious npm package typosquatting a popular ESLint plugin to steal sensitive data, execute commands, and exploit developer systems.