×

Save Your Code

If you click the save button, your code will be saved, and you get an URL you can share with others.

By clicking the "Save" button you agree to our terms and conditions.

Report Error

×

Save to Google Drive

If you have a Google account, you can save this code to your Google Drive.

Google will ask you to confirm Google Drive access.

×

Open from Google Drive

If you have saved a file to Google Drive, you can open it here:

Result Size: 625 x 571
×
Change Orientation Save Code Save to Google DriveSave to Google Drive Load from Google DriveLoad from Google Drive Change Theme, Dark/Light
​x
 
<!DOCTYPE html>
<html>
<head>
<style>
#p1 {
  background-color: yellow;
}
</style>
</head>
<body>
​
<h1>The opacity Property</h1>
​
<p id="p1">Select a value from the list below, to change this element's opacity!</p>
​
<select onchange="myFunction(this);" size="5">
  <option>0
  <option>0.2
  <option>0.5
  <option>0.8
  <option selected="selected">1
</select>
​
<script>
function myFunction(x) {
  // Return the text of the selected option
  var opacity = x.options[x.selectedIndex].text;
  var el = document.getElementById("p1");
  if (el.style.opacity !== undefined) {
    el.style.opacity = opacity;
  } else {
    alert("Your browser doesn't support this example!");
  }
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/cssref/tryit.asp?filename=trycss3_opacity_js by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:01:20 GMT -->
</html>
​
×

Report a Problem: