How To Put React Component Inside HTML String?

I have: an array of HTML strings, eg ['

Hi', '

']. I want to place in between them (thus achieving a layout that would be in jsx:

Solution 1:

You might want to take a look at html-to-react.

This library converts the string to a node tree of DOM elements, then transforms each node to a React element using a set of instructions that you define. I believe that it depends on the string being valid markup though, so you might have to change "<h1>Hi<MyReactComponent/></h1" to something like "<h1>Hi<x-my-react-component></x-my-react-component></h1>.

Example:

import { Parser, ProcessNodeDefinitions } from "html-to-react";
import MyReactComponent from "./MyReactComponent";

const customElements = {
    "x-my-react-component": MyReactComponent
};

// Boilerplate stuff
const htmlParser = new Parser(React);
const processNodeDefinitions = new ProcessNodeDefinitions(React);
function isValidNode(){
    return true;
}

// Custom instructions for processing nodes
const processingInstructions = [
    // Create instruction for custom elements
    {
        shouldProcessNode: (node) => {
            // Process the node if it matches a custom element
            return (node.name && customElements[node.name]);
        },
        processNode: (node) => {
            let CustomElement = customElements[node.name];
            return <CustomElement/>;
        }
    },
    // Default processing
    {
        shouldProcessNode: () => true,
        processNode: processNodeDefinitions.processDefaultNode
    }
];

export default class MyParentComponent extends Component {
    render () {
        let htmlString = "<h1>Hi<x-my-react-component></x-my-react-component></h1>";
        return htmlParser.parseWithInstructions(htmlString, isValidNode, processingInstructions);
    }
}

The essential part here is processingInstructions. Every node in the DOM tree is checked against each instruction in the array, starting from the top, until shouldProcessNode returns true, and the node is transformed to a React element by the corresponding processNode function. This allows for rather complex processing rules, but it quickly gets a bit messy if you want to process nested custom elements. The result of the example is the equivalent of

<h1>
    Hi
    <MyReactComponent/>
</h1>

in JSX syntax. Hope this helps!

Share