Fabric.js toGrayscale() Method

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The toGrayscale() method is used to convert any type of the specified color representation to it’s grayscale representation.

Syntax:

toGrayscale()

Parameters: This method does not accept any parameter.

Return Value: This method returns color representation in grayscale representation.

Example 1:

HTML

<!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 toGrayscale() function over  
        // the specified color values 
        console.log(new fabric.Color("hsl(0, 100%, 50%)") 
                                      .toGrayscale()); 
        console.log(new fabric.Color("hsla(10, 40%, 53%, 0.6)") 
                                      .toGrayscale()); 
        </script> 
    </body> 
   
</html>

Output:

{"_source":[77,77,77,1]}
{"_source":[125,125,125,0.6]}

Example 2:

HTML

<!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)"; 
  
    // Calling the toGrayscale() function over  
    // the above specified color values 
    console.log(new fabric.Color(A).toGrayscale()); 
    console.log(new fabric.Color(B).toGrayscale()); 
    console.log(new fabric.Color(C).toGrayscale()); 
    console.log(new fabric.Color(D).toGrayscale()); 
    </script> 
  
</body> 
  
</html> 

Output:

{"_source":[0,0,0,1]}
{"_source":[62,62,62,1]}
{"_source":[30,30,30,0.6]}
{"_source":[28,28,28,1]}

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