JS acquisition of elements of the external chain style of a simple implementation method _javascript skills

Generally set inline styles for elements, such as <div id= "Div1" style= "width:500px;" ></div>. To get its style, you can document.getElementById ("Div1"). Style.width to get or set. However, if the style is in the outside link or the page is not inline style, you can not get.

In standard browsers, the Window.getcomputedstyll (obj,null) [property] can be used to get the outer chain style, but in IE browsers it is obtained by Obj.currentstyle.

Full HTML code:

<! DOCTYPE html>  

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