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How to set the font size of text with JavaScript?

To set the font size, use the fontSize property in JavaScript. You can try to run the following code to set the font size of the text with JavaScript −

Example

Live Demo 
<!DOCTYPE html>
<html>
   <body>
      <h1>Heading 1</h1>
      <p id = "myID">
         This is Demo Text. This is Demo Text. This is Demo Text. This is Demo Text.
         This is Demo Text. This is Demo Text. This is Demo Text. This is Demo Text.
      </p>
      <button type = "button" onclick = "display()">Set Font Family and Size</button>
      
      <script>
         function display() {
            document.getElementById("myID").style.fontFamily = "verdana,sans-serif";
            document.getElementById("myID").style.fontSize = "smaller";
         }
      </script>
      
   </body>
</html>
Sai Subramanyam
Sai Subramanyam

Passionate, Curious and Enthusiastic.

Updated on 30-Jul-2019 22:30:21

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