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tagName (attribute )

Owning interface and usage:  
Element.tagName

Member of these other interfaces:  
none

Readonly:   yes

Type:   DOMString

Description:  
The name of the element.

Note:  
Note that this is case-preserving in XML, as are all of the operations of the DOM. The HTML DOM returns the tagName of an HTML element in the canonical uppercase form, regardless of the case in the source HTML document.


Example:
Text in the first DIV.
Some text in the second DIV.
Some text and element in the third DIV.
We can try another elements. It will be much more interesting.
Text in the last DIV.
Source: 
   <div id="doc">
     <div>
       Text in the first DIV.
     </div>
     <div id="DDD" class="secondClass">
       Some text in the second DIV.
     </div>
     <div class="thirdClass">
       Some text and <span id="SSS">element</span> in the third DIV.
     </div>
     <div class="fourthClass">
       We can try <i>another elements</i>.
       It will be much more <b>interesting</b>.
     </div>
     <div>
       Text in the last DIV.
     </div>
   </div>
JavaScript: 
  var main = document.getElementById('doc');
  var output = main.tagName;
Output:
desired your browser
DIV



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