Create Element From Dynamic HTML String

I’m working on a custom gutenberg block, and in the save method, I have dynamically changing HTML in the form of a string.

element.createElement(
    'div',
    null,
    contentString,
)

The above snippet just outputs the HTML as a string, converting all the symbols to HTML entities (<, >, etc.)

How can I go about writing the actual HTML?

Answers:

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Method 1

You can use dangerouslysetinnerhtml, a special HTML attribute in React:

dangerouslySetInnerHTML is React’s replacement for using innerHTML
in the browser DOM. In general, setting HTML from code is risky
because it’s easy to inadvertently expose your users to a cross-site
scripting (XSS)
attack. So, you can set HTML directly from React, but you have to type
out dangerouslySetInnerHTML and pass an object with a __html key,
to remind yourself that it’s dangerous.

• ES5:

  wp.element.createElement( 'div', {
      dangerouslySetInnerHTML: {
          __html: '<b>HTML</b> here'
      }
  } );
  

• JSX+ESNext:

  const createMarkup = ( html ) => { return { __html: html } };
  
  const my_element = <div dangerouslySetInnerHTML={ createMarkup('<b>HTML</b> here') }></div>;
  

Or in Gutenberg, you can use wp.element.RawHTML() which basically does the same thing as the snippets above.

• ES5:

  wp.element.RawHTML( {
      children: '<b>HTML</b> here'
  } );
  

• JSX+ESNext:

  import { RawHTML } from '@wordpress/element';
  
  const my_html = 'some dynamic <b>HTML</b> here!';
  
  const my_element = <RawHTML>{ my_html }</RawHTML>;
  

Method 2

I haven’t tested it, but you might want to try:

element.createElement(
    'div',
    null,
    {dangerouslySetInnerHTML: {__html: contentString}},
)

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0