An attribute specifying whether error checking is enforced or not.
When set to false, the implementation is free to not test every possible
error case normally defined on DOM operations, and not raise any DOMException
on DOM operations or report errors while using Document.normalizeDocument().
In case of error, the behavior is undefined. This attribute is true by default.
An attribute specifying whether error checking is enforced or not. When set to false, the implementation is free to not test every possible error case normally defined on DOM operations, and not raise any DOMException on DOM operations or report errors while using Document.normalizeDocument(). In case of error, the behavior is undefined. This attribute is true by default.