Style for CSS elements in the calculation (i.e., after a cascade, the final style), supports the W3C's browser can use the document. The defaultView. GetComputedSyle method.
this method accepts two parameters, the first parameter to get style elements, the second parameter is a pseudo element string (for example: " : after" and if not, is set to null).
this method returns a StyleSheetDeclaration object, the object through the getPropertyValue (propertyName) to obtain the final style attribute values. Notice that the proprtyName wrold - world type (such as: background color).
element is used in IE. CurrentStyle [propertyName] method, pay attention to the propertyName here for worldWorld type (such as: the backgroundColor).
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This concludes the body part