# Why is getElementsByTagName used?
**getElementsByTagName** is used to get a list of elements with a specified TagName. The returned list will basically be a live `HtmlCollection` ff elements in the same order as in the source file.

The #key# Indexing of Returned list: where list elements are called as Nodes of HtmlCollection #key# starts at `0`.


# Syntax
```
document.getElementsByTagName(TagName)
```

<html>
 <head>
 </head>
 <body>
   <div id="Div1">
   Let's Start 
   <br>
   <br>
   <span>Hi!!</span>
   <p>First Paragraph</p>
   </div>
  
   <p>Favorite Color</p>
   <ul>
     <li>Black</li>
     <li>Blue</li>
   </ul>  
   <br>
   <button onclick="FirstFunction()">RUN FirstFunction</button> 
   <br>
   <p id="Result1"></p>

   <button onclick="SecondFunction()">RUN SecondFunction</button> 
   
 </body>
</html>

codemirror

What is getElementsByTagName in JavaScript?

getElementsByTagName returns a live HTMLCollection of elements with a specified tag name.