The color.opacity in D3.js is used to fade the color. The opacity value is in the range of [0, 1].
Syntax:
color.opacity
Parameters: This function does not accept any parameters.
Return Value: This function returns the opacity value of the specified color.
Below program illustrate the color.opacity function in D3.js:
Example:
<!DOCTYPE html> <html> <head> <title>color.rgb() function </title>
</script>
</head> <body> <script>
// Calling the d3.color() function
// with some parameters
var color1 = d3.color( "red" );
var color2 = d3.color( "green" );
var color3 = d3.color( "blue" );
// Calling the color.opacity
var A = color1.opacity;
var B = color2.opacity;
var C = color3.opacity;
// Getting the opacity value
console.log(A);
console.log(B);
console.log(C);
</script>
</body> </html> |
Output:
1 1 1