使用Medium Editor及插件时无法获取序列化内容的问题求助

Hey there, let's tackle this frustrating serialization problem you're hitting with Medium Editor and the insert plugin. I’ve run into similar quirks when combining these tools, so here’s what’s going on and how to fix it:

Why the Dynamic Keys? #

The medium-editor-xxx formatted keys (with changing numbers) happen because the medium-editor-insert-plugin overrides the default serialization ID generation logic of Medium Editor. Instead of the predictable element-0 keys you expect, it generates dynamic prefixed IDs that change on each load or editor initialization. And since the serialized object is a plain JavaScript object (not an array), you can’t access values via numeric indexes like allContents[0]—that’s why that throws an error.

Solution 1: Grab Values Directly with Object.values() #

The simplest fix is to extract all serialized content values into an array, then access the one you need. This works even with dynamic keys:

var allContents = editor.serialize();
// Convert the serialized object's values into an array
var contentArray = Object.values(allContents);
// Get the first editor's content (use ?. to avoid errors if the array is empty)
var elContent = contentArray[0]?.value;

If you have multiple editable elements, you can loop through contentArray to target specific ones, or match them against the editor’s bound elements (more on that next).

Solution 2: Map Serialized Content to Editor Elements #

If you need more control (e.g., targeting a specific editable element by ID or selector), you can pair the serialized data with the editor’s elements property (which holds all bound DOM elements):

var allContents = editor.serialize();
var editorElements = editor.elements;

// Loop through each editor element to find its matching serialized content
editorElements.forEach(el => {
  // Find the dynamic key that corresponds to this element
  const matchingKey = Object.keys(allContents).find(key => {
    // The plugin's keys are tied to the element's internal index—this check works for most cases
    return key.startsWith('medium-editor-') && 
           allContents[key].element === el;
  });

  if (matchingKey) {
    const elementContent = allContents[matchingKey].value;
    // If this is the element you care about, assign it to elContent
    if (el.id === 'your-target-editor-id') {
      elContent = elementContent;
    }
  }
});

Solution 3: Customize Serialization Key Generation #

For long-term predictability, you can override the plugin’s ID generation by setting a custom getElementId function in your Medium Editor config. This lets you use fixed, predictable keys instead of dynamic ones:

var editor = new MediumEditor('.editable', {
  serialization: {
    getElementId: function(el) {
      // Use the element's ID if it has one, otherwise use a fixed prefix + index
      return el.id || `custom-editor-${editor.elements.indexOf(el)}`;
    }
  }
});

Now when you run editor.serialize(), the keys will be either the element’s ID or custom-editor-0, custom-editor-1, etc.—so you can safely access them like allContents['custom-editor-0'].value.

Quick Notes #

• If you support older browsers that don’t have Object.values() or optional chaining (?.), replace them with manual loops and condition checks (e.g., contentArray.length > 0 ? contentArray[0].value : '').
• Double-check that you’re initializing the insert plugin correctly after Medium Editor—order matters here, and misordering can cause unexpected serialization behavior.

内容的提问来源于stack exchange，提问作者Mansuro