maxlength attribute is not supported on contenteditable

Phenomenon

The maxlength attribute, which works on <input> and <textarea> elements, is not supported on contenteditable regions. There is no built-in way to limit the amount of content that can be entered.

Reproduction example

1. Create a contenteditable div with maxlength="100".
2. Try to type more than 100 characters.
3. Observe whether the input is limited.

Observed behavior

• In Chrome on Windows, the maxlength attribute is ignored on contenteditable.
• Users can enter unlimited content.
• No built-in validation or limitation exists.

Expected behavior

• The maxlength attribute should be supported on contenteditable.
• Input should be limited to the specified length.
• Or, there should be a standard way to limit content length.