How to set the boldness of the font with JavaScript?

Javascript Web Development Front End Scripts

Use the fontWeight property in JavaScript to set the font boldness.

Example

You can try to run the following code to set the boldness of the font with JavaScript −

<!DOCTYPE html>
<html>
   <body>
      <h1>Heading 1</h1>
      <p id="myID">
         This is Demo Text.
      </p>
      <button type="button" onclick="display()">Set Font Family and Font Weight</button>
      <script>
         function display() {
            document.getElementById("myID").style.fontFamily = "verdana,sans-serif";
            document.getElementById("myID").style.fontWeight = "800";
         }
      </script>
   </body>
</html>