2.1.86 [W3C-HTML51] Section 5.6.5 Spelling and grammar checking

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V0301: The spellcheck attribute cannot be set to override the default when the default is true and the element was created using createElement

The specification states:

 ... Spelling and grammar checking
     ...
     element . spellcheck [ = value ]
  
         Returns true if the element is to have its spelling and grammar checked; 
         otherwise, returns false.
  
         Can be set, to override the default and set the spellcheck content attribute.

EdgeHTML Mode

The spellcheck attribute cannot be set to override the default when the default is true and the element was created using createElement.