JavaScript Change the Opacity of Div
To change the opacity of a div using JavaScript, get reference to the div element, and assign required opacity value to the element.style.opacity
property.
Opacity value ranges from 0 to 1. For example, 0.2, 0.3, 0.8, 0.45, etc., are some of the values that can be assigned to opacity property.
Example
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> </head> <body> <h2>Change Opacity of Div in JavaScript</h2> <div id="myDiv"> <p>This is a paragraph in Div.</p> <span>This is a span in Div.</span> </div> <br> <button type="button" onclick="changeStyle()">Click Me</button> <script> function changeStyle(){ var element = document.getElementById("myDiv"); element.style.opacity = "0.2"; } </script> </body> </html>
Conclusion
In this JavaScript Tutorial, we learned how to change the opacity of a div using JavaScript.