To set the space between characters, use the JavaScript letterSpacing property.
Example
You can try to run the following code to set the space between characters in a text with JavaScript −
<!DOCTYPE html> <html> <body> <h1>Heading 1</h1> <p id="myID">This is Demo Text.</p> <button type="button" onclick="display()">Set Space between characters</button> <script> function display() { document.getElementById("myID").style.letterSpacing = "7px"; } </script> </body> </html>