For a Boolean property, you cannot set it to false from markup, since the presence of the attribute, with or w/o a value, equates to true. This is the standard behavior for attributes in the web platform.

8 years ago

" For a Boolean property, you cannot set it to false from markup, since the presence of the attribute, with or w/o a value, equates to true. This is the standard behavior for attributes in the web platform. "

afterwards says

8 years ago

" as HTML attributes can only be strings; however, the standard serialize method is used to convert values to strings, so true will serialize to an empty attribute, and false will result in no attribute set "

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