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getRGBColorValue method (CSSPrimitiveValue)

Browser support:

If the value represented by the current CSSPrimitiveValue object is a color, then retrieves an RGBColor object that represents the value.

This method can be used if the type of the represented value is CSS_RGBCOLOR. To get the type of the represented value, use the primitiveType property.

Syntax:

object.getRGBColorValue ( );

You can find the related objects in the Supported by objects section below.

Return value:

Returns an RGBColor object that represents the value.

Example HTML code 1:

This example illustrates the use of the getRGBColorValue method:

<head>
    <script type="text/javascript">
        function GetRGBComponents () {
            var div = document.getElementById ("myDiv");
            if (window.getComputedStyle) {
                var compStyle = window.getComputedStyle (div, null);
                try {
                    var value = compStyle.getPropertyCSSValue ("background-color");
                    var valueType = value.primitiveType;
                    if (valueType == CSSPrimitiveValue.CSS_RGBCOLOR) {
                        var rgb = value.getRGBColorValue ();
                        var r = rgb.red.getFloatValue (CSSPrimitiveValue.CSS_NUMBER);
                        var g = rgb.green.getFloatValue (CSSPrimitiveValue.CSS_NUMBER);
                        var b = rgb.blue.getFloatValue (CSSPrimitiveValue.CSS_NUMBER);

                        var message = "red: " + r + "\n";
                        message += "green: " + g + "\n";
                        message += "blue: " + b;
                        alert (message);
                    }
                    else {
                        alert ("The value of the background-color property is not an RGB function!");
                    }
                } 
                catch (e) {
                    alert ("Your browser does not support the getPropertyCSSValue method!");
                }
            }
            else {
                alert ("Your browser does not support the getComputedStyle method!");
            }
        }
    </script>
</head>
<body>
    <div id="myDiv" style="background-color:yellow;">An element with background-color.</div>
    <br />
    Use the following button to get the red, green and blue components of the color specified by the background-color property!
    <button onclick="GetRGBComponents ()">Get RGB components</button>
</body>