[Solved] Failed to initialize the editor as the document is not in standards mode. TinyMCE requires standards mode.

error message

  • Failed to initialize the editor as the document is not in standards mode. TinyMCE requires standards mode.

general meaning

  • TinyMCE cannot initialize properly in non-standard document mode.

Solution

  • Make sure the html file starts with a <!DOCTYPE html>single line.

Common scenarios

  • Such a problem will occur when using php\java\js and other languages ​​to write above the head of the html page.

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