How to convert a string into React element- ReactJs/ Javascript

Question

I crated a react html element like:

let elements = (
      <div>
        <div>dwewe</div>
        <div>wefwef</div>
        <span>yurhfjer</span>
      </div>

    );

and now I wanted to pass this to an html attribute, hence I converted the react element into string using:

<span data-tip-react={ReactDOMServer.renderToString(element)}>{title}></span>

I'm now able to access these elements, however I'd like to convert it back to react element (the way it was before conversion) here is what I'm expecting the o/p as:

I tried using DOMParser, however it returned an html element that React did not accept for rendering and threw an errr: not a react element

How do I convert the string back into the same format - React element?? please help! thanks

can you show this part I tried using DOMParser, however it returned an html element that React did not accept for rendering and threw an errr: not a react element — Crocsx
– Crocsx, Commented Mar 6, 2020 at 9:08

Crocsx · Accepted Answer · 2020-03-06 09:17:50Z

0

Following here :

dynamic HTML String to react component

You can use dangerouslySetInnerHTML (for simple element) or some npm package :

class App extends Component {
  constructor() {
    super();
    this.state = {
      name: 'React'
    };
  }

  getDom() {
    return (
      <div>
        <div>dwewe</div>
        <div>wefwef</div>
        <span>yurhfjer</span>
      </div>
    );
  }

  convertToString(dom) {
    console.log("To String", ReactDOMServer.renderToString(dom))
    return ReactDOMServer.renderToString(dom)
  }

  convertToDOM(string) {
    let domparser = new DOMParser();
    console.log("To Dom", domparser.parseFromString(string, 'text/html'))
    return domparser.parseFromString(string, 'text/html')
  }

  render() {
    return (
      <div>
        <Hello name={this.state.name} />
        <p>
          Start editing to see some magic happen :)
          {<div dangerouslySetInnerHTML={{__html: this.convertToString(this.getDom())}}></div>}
        </p>
      </div>
    );
  }
}

ex : https://stackblitz.com/edit/react-mhsqfd

answered Mar 6, 2020 at 9:17

Crocsx

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6 Comments

user1234 Over a year ago

Thanks for the solution: This is what I tried for DOM purify: let parser = new DOMParser(); let parsedHtml = parser.parseFromString(htmlContent, 'text/html') and I'm trying to render it as react HTML for which I get this error:

user1234 Over a year ago

Error: Objects are not valid as a React child (found: object with keys {__html}). If you meant to render a collection of children, use an array instead.

user1234 Over a year ago

also is there any alternative for using dangerouslySetInnerHTML, this is prone to xxs attacks and we are suing sanitize in our app for purifying any html tag strings..so I'm sure if this will work.. :(

Crocsx Over a year ago

@user1234 sorry for the delay, do you still have the problem? If so can you make a quick stackblitz so that it is easier to understand ?

Crocsx Over a year ago

Then the fast way would be to use something like react-jsx-parser or do by hand the convertion to react code using babel like stackoverflow.com/questions/36104302/…

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