D3.js | d3.set.values() Function

Last Updated : 28 Jun, 2019

The set.values() function in D3.js is used to return an array of the string values in the set. This function can be used for computing the unique values for a set of strings.

Syntax:

d3.set([Array]).values();

Parameters: This function accepts a parameter Array of strings.

Return Value: It returns the array of unique element of the given array elements.

Below programs illustrate the d3.set.values() function in D3.js:
Example 1:

<!DOCTYPE html> 
<html> 
   
<head> 
    <title>d3.set.values() Function</title> 
       
    <script src='https://d3js.org/d3.v4.min.js'></script> 
</head> 
<body> 
  
  <script> 
      
     // Initialising an array 
     Array1 = ["a", "a", "b", "c"]; 
     Array2 = ["c", "c", "c"]; 
     Array3 = ["Geeks", "gfg", "GeeksforGeeks"]; 
       
     // Calling the d3.set.values() function 
     A = d3.set(Array1).values(); 
     B = d3.set(Array2).values(); 
     C = d3.set(Array3).values(); 
       
     // Getting the unique values of the set 
     console.log(A); 
     console.log(B); 
     console.log(C); 
  </script> 
</body> 
</html> 

Output:

["a", "b", "c"]
["c"]
["Geeks", "gfg", "GeeksforGeeks"]

Example 2:

<!DOCTYPE html> 
<html> 
    
<head> 
    <title>d3.set.values() Function</title> 
        
    <script src='https://d3js.org/d3.v4.min.js'></script> 
</head> 
<body> 
    
  <script> 
       
     // Calling the d3.set.values() function 
     // with a array parameter 
     A = d3.set([1, 2, 3, 3]).values(); 
     B = d3.set(["a"]).values(); 
     C = d3.set(["a", "b", "c", "a", "b", "c"]).values(); 
       
     // Getting the unique values of the set 
     console.log(A); 
     console.log(B); 
     console.log(C); 
  </script> 
</body> 
</html> 