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D3.js | d3.set.remove() function

  • Last Updated : 28 Jun, 2019

The set.remove() is a function in D3.js. If the given array contains the specified value then removes it and returns true. Otherwise, this function does nothing and returns false.

Syntax:

d3.set([Array]).remove(element);

Parameters: This function accepts two parameters which are illustrated below:

  • Array: This is an given array of elements as string.
  • element: This is the value which is going to be searched into the given array and removes it if present and returns true otherwise does nothing and returns false.

Return Value: It returns true if the given array contains the specified value Otherwise, returns false.
Note: It does not hold the updated array.
Below programs illustrate the d3.set.remove() function in D3.js.
Example 1:




<!DOCTYPE html>
<html>
    
<head>
    <title> d3.set.remove() 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.remove() function
     A = d3.set(Array1).remove("a");
     B = d3.set(Array2).remove("a");
     C = d3.set(Array3).remove("Geeks");
       
     // Getting the value true if the specified element
     // is present in the array otherwise false
     console.log(A);
     console.log(B);
     console.log(C);
  </script>
</body>

Output:



true
false
true

Example 2:




<!DOCTYPE html>
<html>
    
<head>
    <title> d3.set.remove() Function</title>
        
    <script src='https://d3js.org/d3.v4.min.js'></script>
</head>
<body>
    
  <script>
       
     // Calling the d3.set.remove() function
     // with a array and a element as the parameter 
     A = d3.set([1, 2, 3, 3]).remove(4);
     B = d3.set(["a"]).remove("a");
     C = d3.set(["a", "b", "c", "a", "b", "c"]).remove("d");
       
     // Getting the value true if the specified element
     // is present in the array otherwise false
     console.log(A);
     console.log(B);
     console.log(C);
  </script>
</body>

Output:

false
true
false

Ref: https://devdocs.io/d3~5/d3-collection#set_remove




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