jquery .css('text-decoration') doesn't work from parents -

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I have to get the essential CSS property of the element (the property can be inherited from her parents) < P> Standart Jquery .css () can do this.

I have such an HTML: 

   & Lt; Span id = "something" & gt; Our element & lt; / Span & gt; & Lt; Br> Some text & lt; / Div & gt; & Lt; Div id = "result" & gt; & Lt; / Div & gt;   
 CSS:    #some {font-weight: bold; } # Containers {text-decoration: underline; Color: RGB (0,255,0); Font-size: 32px; }   
 and jQuery code:  
  $ (function () {var decor = $ ("#some") .css ('text-decoration' ) Weight Weight = $ ("#Additional"). CSS ('font-weight'); var color = $ ("#some"). CSS ('color'); var size = $ ("#some") Css ('font-size'); var result = "
  Our object's own property:   & gt; hereditary property: & lt; / b & gt; & lt; br & gt; ; & Lt; br & gt; Results; + "Color:" + Color + "& lt; br> Font Size:" + size + "& lt; br & gt; Text-decoration : "+ Decoration; $ (" # result "). Html (results);});   
 All properties are displayed but text-decoration - no, but why?  
 
 
 Text-decoration is defined  Inherited: No  inside the CSS-specification < / P> 
 See:  
 So everything really works fine :)

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