HTML to React parser that works on both the server (Node.js) and the client (browser):
HTMLReactParser(string[, options])
The parser converts an HTML string to one or more React elements.
To replace an element with another element, check out the replace option.
const parse = require('html-react-parser');
parse('<p>Hello, World!</p>'); // React.createElement('p', {}, 'Hello, World!')Repl.it | JSFiddle | CodeSandbox | TypeScript | Examples
Table of Contents
- Install
- Usage
- Migration
- FAQ
- Is this XSS safe?
- Does invalid HTML get sanitized?
- Are
<script>tags parsed? - Attributes aren't getting called
- Parser throws an error
- Is SSR supported?
- Elements aren't nested correctly
- Warning: validateDOMNesting(...): Whitespace text nodes cannot appear as a child of table
- Don't change case of tags
- TS Error: Property 'attribs' does not exist on type 'DOMNode'
- Can I enable
trimfor certain elements? - Webpack build warnings
- Performance
- Contributors
- Support
- License
NPM:
npm install html-react-parser --saveYarn:
yarn add html-react-parserCDN:
<!-- HTMLReactParser depends on React -->
<script src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
<script src="https://unpkg.com/html-react-parser@latest/dist/html-react-parser.min.js"></script>
<script>
window.HTMLReactParser(/* string */);
</script>Import or require the module:
// ES Modules
import parse from 'html-react-parser';
// CommonJS
const parse = require('html-react-parser');Parse single element:
parse('<h1>single</h1>');Parse multiple elements:
parse('<li>Item 1</li><li>Item 2</li>');Make sure to render parsed adjacent elements under a parent element:
<ul>
{parse(`
<li>Item 1</li>
<li>Item 2</li>
`)}
</ul>Parse nested elements:
parse('<body><p>Lorem ipsum</p></body>');Parse element with attributes:
parse(
'<hr id="foo" class="bar" data-attr="baz" custom="qux" style="top:42px;">'
);The replace option allows you to replace an element with another element.
The replace callback's first argument is domhandler's node:
parse('<br>', {
replace: domNode => {
console.dir(domNode, { depth: null });
}
});Console output:
Element {
type: 'tag',
parent: null,
prev: null,
next: null,
startIndex: null,
endIndex: null,
children: [],
name: 'br',
attribs: {}
}The element is replaced if a valid React element is returned:
parse('<p id="replace">text</p>', {
replace: domNode => {
if (domNode.attribs && domNode.attribs.id === 'replace') {
return <span>replaced</span>;
}
}
});For TypeScript projects, you may need to check that domNode is an instance of domhandler's Element:
import { HTMLReactParserOptions, Element } from 'html-react-parser';
const options: HTMLReactParserOptions = {
replace: domNode => {
if (domNode instanceof Element && domNode.attribs) {
// ...
}
}
};If you're having issues with domNode instanceof Element, try this alternative solution.
Replace the element and its children (see demo):
import parse, { domToReact } from 'html-react-parser';
const html = `
<p id="main">
<span class="prettify">
keep me and make me pretty!
</span>
</p>
`;
const options = {
replace: ({ attribs, children }) => {
if (!attribs) {
return;
}
if (attribs.id === 'main') {
return <h1 style={{ fontSize: 42 }}>{domToReact(children, options)}</h1>;
}
if (attribs.class === 'prettify') {
return (
<span style={{ color: 'hotpink' }}>
{domToReact(children, options)}
</span>
);
}
}
};
parse(html, options);HTML output:
<h1 style="font-size:42px">
<span style="color:hotpink">
keep me and make me pretty!
</span>
</h1>Convert DOM attributes to React props with attributesToProps:
import parse, { attributesToProps } from 'html-react-parser';
const html = `
<main class="prettify" style="background: #fff; text-align: center;" />
`;
const options = {
replace: domNode => {
if (domNode.attribs && domNode.name === 'main') {
const props = attributesToProps(domNode.attribs);
return <div {...props} />;
}
}
};
parse(html, options);HTML output:
<div class="prettify" style="background:#fff;text-align:center"></div>Exclude an element from rendering by replacing it with <React.Fragment>:
parse('<p><br id="remove"></p>', {
replace: ({ attribs }) => attribs && attribs.id === 'remove' && <></>
});HTML output:
<p></p>The library option specifies the UI library. The default library is React.
To use Preact:
parse('<br>', {
library: require('preact')
});Or a custom library:
parse('<br>', {
library: {
cloneElement: () => {
/* ... */
},
createElement: () => {
/* ... */
},
isValidElement: () => {
/* ... */
}
}
});
htmlparser2options do not work on the client-side (browser) and only works on the server-side (Node.js). By overridinghtmlparser2options, universal rendering can break.
Default htmlparser2 options can be overridden in >=0.12.0.
To enable xmlMode:
parse('<p /><p />', {
htmlparser2: {
xmlMode: true
}
});By default, whitespace is preserved:
parse('<br>\n'); // [React.createElement('br'), '\n']To remove whitespace, enable the trim option:
parse('<br>\n', { trim: true }); // React.createElement('br')This fixes the warning:
Warning: validateDOMNesting(...): Whitespace text nodes cannot appear as a child of <table>. Make sure you don't have any extra whitespace between tags on each line of your source code.
However, intentional whitespace may be stripped out:
parse('<p> </p>', { trim: true }); // React.createElement('p')TypeScript projects will need to update the types in v1.0.0.
For the replace option, you may need to do the following:
import { Element } from 'domhandler/lib/node';
parse('<br class="remove">', {
replace: domNode => {
if (domNode instanceof Element && domNode.attribs.class === 'remove') {
return <></>;
}
}
});Since v1.1.1, Internet Explorer 9 (IE9) is no longer supported.
No, this library is not XSS (cross-site scripting) safe. See #94.
No, this library does not sanitize HTML. See #124, #125, and #141.
Although <script> tags and their contents are rendered on the server-side, they're not evaluated on the client-side. See #98.
The reason why your HTML attributes aren't getting called is because inline event handlers (e.g., onclick) are parsed as a string rather than a function. See #73.
If the parser throws an erorr, check if your arguments are valid. See "Does invalid HTML get sanitized?".
Yes, server-side rendering on Node.js is supported by this library. See demo.
If your elements are nested incorrectly, check to make sure your HTML markup is valid. The HTML to DOM parsing will be affected if you're using self-closing syntax (/>) on non-void elements:
parse('<div /><div />'); // returns single element instead of array of elementsSee #158.
Enable the trim option. See #155.
Tags are lowercased by default. To prevent that from happening, pass the htmlparser2 option:
const options = {
htmlparser2: {
lowerCaseTags: false
}
};
parse('<CustomElement>', options); // React.createElement('CustomElement')Warning: By preserving case-sensitivity of the tags, you may get rendering warnings like:
Warning: <CustomElement> is using incorrect casing. Use PascalCase for React components, or lowercase for HTML elements.
The TypeScript error occurs because DOMNode needs be an instance of domhandler's Element. See migration or #199.
Yes, you can enable or disable trim for certain elements using the replace option. See #205.
If you see the Webpack build warning:
export 'default' (imported as 'parse') was not found in 'html-react-parser'
Then update your Webpack config to:
// webpack.config.js
module.exports = {
// ...
resolve: {
mainFields: ['browser', 'main', 'module']
}
};Run benchmark:
npm run test:benchmarkOutput of benchmark run on MacBook Pro 2017:
html-to-react - Single x 415,186 ops/sec ±0.92% (85 runs sampled)
html-to-react - Multiple x 139,780 ops/sec ±2.32% (87 runs sampled)
html-to-react - Complex x 8,118 ops/sec ±2.99% (82 runs sampled)
Run Size Limit:
npx size-limitThis project exists thanks to all the people who contribute. [Contribute].
Become a financial contributor and help us sustain our community. [Contribute]
Support this project with your organization. Your logo will show up here with a link to your website. [Contribute]
