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			From the Web IDL spec: https://heycam.github.io/webidl/#idl-undefined [...] undefined constant values in IDL are represented with the `undefined` token. [...] Note: This value was previously spelled `void`, and more limited in how it was allowed to be used.
		
			
				
	
	
		
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			20 lines
		
	
	
	
		
			716 B
		
	
	
	
		
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| interface Element : Node {
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|     readonly attribute DOMString? namespaceURI;
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|     readonly attribute DOMString tagName;
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| 
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|     DOMString? getAttribute(DOMString qualifiedName);
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|     undefined setAttribute(DOMString qualifiedName, DOMString value);
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| 
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|     readonly attribute Element? firstElementChild;
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|     readonly attribute Element? lastElementChild;
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| 
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|     Element? querySelector(DOMString selectors);
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|     ArrayFromVector querySelectorAll(DOMString selectors);
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| 
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|     [LegacyNullToEmptyString] attribute DOMString innerHTML;
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|     [Reflect] attribute DOMString id;
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|     [Reflect=class] attribute DOMString className;
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| 
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|     readonly attribute Element? nextElementSibling;
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|     readonly attribute Element? previousElementSibling;
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| };
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