I am learning how to develop a plugin for wordpress. I am running into some issue. The plugin that I am developing is a custom block. I am able to successfully activate the plugin but when I go to my block editor, the custom block is not there. Could I have some one take a look at what I have to make sure there are no mistakes?

PHP File:


 * Plugin name: Animation fade custom block
 * Descritption: Plugin used to implement fade-in/out effects

 function midstory_fade_animation_script_register()
    // Script name, script location, related js name, array of dependecies, Word press refresh?, in footer boolean
    wp_enqueue_script('midstory-animation-fade-block', plugin_dir_url(__FILE__).'midstory_animation_fade.js', array('wp-blocks', 'wp-i18n', 'wp-editor'), true, false);

 add_action('enqueue_block_editor_assets', 'midstory_fade_animation_script_register');



    title: 'Animation Fade Block',
    icon: 'hammer', // Go to https://developer.wordpress.org/resource/dashicons/#minus for dash icons
    category: 'design',
    attributes: {
        fadeInLength: {type: 'string'},
        fadeOutLength: {type: 'string'},
        Picture: {type: 'string'} // Location of Picture
    edit: function(props){// All properties pulled from WP blocks
        return React.createElement("div", null, /*#__PURE__*/React.createElement("label", null, "Fade In Time"), /*#__PURE__*/React.createElement("input", {
          type: "text",
          value: props.attributes.fadeInLength,
          placeholder: "0"
        }), /*#__PURE__*/React.createElement("label", null, "Fade out Time"), /*#__PURE__*/React.createElement("input", {
          type: "text",
          value: props.attributes.fadeOutLength,
          placeholder: "0"
        }), /*#__PURE__*/React.createElement("label", null, "Image"), /*#__PURE__*/React.createElement("input", {
          type: "text",
          value: props.attributes.Picture,
          placeholder: "/example/location"
        return null;

  • In the browser's developer tools can you see your script loading? Is the URL correct? If so, are there any JavaScript errors in the console? Aug 18 at 16:28

1 Answer 1


A few parameters need tweaking in midstory_fade_animation_script_register():

function midstory_fade_animation_script_register() {
    // Handle, script location, dependecies, version, in footer boolean
    wp_enqueue_script( 'midstory-animation-fade-block', plugin_dir_url( __FILE__ ) . '/midstory_animation_fade.js', array( 'wp-blocks', 'wp-i18n', 'wp-editor' ), '1.0.1', false );
  • The script location needs a slash between the plugin folder and the filename.
  • What you were calling "WordPress refresh?" is for a version number.

That will get your block showing up as an option to add in the Editor. Beyond that, you should look into wordpress/element rather than calling React directly as WordPress has built wrappers around its functionality.

  • 1
    Yes! This is the correct answer. Thank you so much. It is now appearing in the editor as intended! I would upvote but my rep is too low Aug 18 at 18:11

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