Style opacity Property
Example
Make a DIV element transparent:
document.getElementById("myDIV").style.opacity = "0.5";
Try it Yourself »
Definition and Usage
The opacity property sets or returns the opacity level of an element.
The opacity-level of an element describes the transparency-level, where 1 is not transperant at all, 0.5 is 50% see-through, and 0 is completely transparent.
Browser Support
| Property | |||||
|---|---|---|---|---|---|
| opacity | Yes | Yes | Yes | Yes | Yes |
Note: IE8 and earlier supports an alternative, the filter property.
Syntax
Return the opacity property:
object.style.opacity
Set the opacity property:
object.style.opacity = "number|initial|inherit"
Property Values
| Value | Description |
|---|---|
| number | Specifies the opacity. From 0.0 (fully transparent) to 1.0 (fully opaque) |
| initial | Sets this property to its default value. Read about initial |
| inherit | Inherits this property from its parent element. Read about inherit |
Technical Details
| Default Value: | 1 |
|---|---|
| Return Value: | A String, representing the opacity-level of an element |
| CSS Version | CSS3 |
Related Pages
CSS reference: opacity property
❮ Style Object
