Fabric.js getAlpha() Method

0 0 1 minute read

The getAlpha() method is used to get the value of alpha channel for the specified color value.

Syntax:

getAlpha()

Parameters: This method does not accept any parameters.

Return Value: This method returns the alpha channel value.

Example 1:

Javascript

<!DOCTYPE html> 
<html> 
  
<head> 
  <!-- Adding the FabricJS library --> 
  <script src= 
"https://cdnjs.cloudflare.com/ajax/libs/fabric.js/3.6.2/fabric.min.js"> 
  </script> 
</head> 
  
<body> 
<script type="text/javascript"> 
  
 // Calling the getAlpha() function over 
 // the specified color values 
 console.log(new fabric.Color("hsl(0, 100%, 50%)").getAlpha()); 
 console.log(new fabric.Color("hsla(0, 100%, 50%, 0.2)").getAlpha()); 
</script> 
  
</body> 
  
</html>

Output:

1
0.2

Example 2:

Javascript

<!DOCTYPE html> 
<html> 
  
<head> 
  <!-- Adding the FabricJS library --> 
  <script src= 
"https://cdnjs.cloudflare.com/ajax/libs/fabric.js/3.6.2/fabric.min.js"> 
  </script> 
</head> 
  
<body> 
<script type="text/javascript"> 
  
 // Initializing some color values in different color format 
 var A = "hex(fff00f)"; 
 var B = "hsl(12, 13%, 25%)"; 
 var C = "hsla(10, 40%, 13%, 0.6)"; 
 var D = "rgb(10, 40, 13)"; 
 var E = "rgba(10, 40, 13, 0.9)"; 
  
 // Calling the getAlpha() function over 
 // the above specified color values 
 console.log(new fabric.Color(A).getAlpha()); 
 console.log(new fabric.Color(B).getAlpha()); 
 console.log(new fabric.Color(C).getAlpha()); 
 console.log(new fabric.Color(D).getAlpha()); 
 console.log(new fabric.Color(E).getAlpha()); 
</script> 
  
</body> 
  
</html>

Output:

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