Ramda.js R.without() Function

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Ramda.js is a library in JavaScript that is used for playing with array, strings, objects etc, but in a functional way. The without() function in Ramda is used to return the array with the particular set of values removed from it. It works as filter in javascript.

Syntax:

R.without(elementArray, array)

Parameters: This function accept two parameters as mentioned above and described below:

elementArray: It is the array of elements to be removed from the original array.
array: It is the original array to be given as second parameter.

Note: Both parameters are necessary to be given.

Return Value: The return type of this function is array .

Below examples illustrate the R.without() function in Ramda.js.

Example 1:

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content= 
        "width=device-width, initial-scale=1.0"> 
    <title>NodeJS Ramda.replace() method</title> 
</head> 
  
<body> 
    <!-- By linking this script "R" is attached 
        as the global variable in the browser-->
    <script src= 
"//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"> 
    </script> 
      
    <script> 
        let elementArray = ["a", "b"]; 
        let array = ["a", "a", "b", "c", "d"] 
  
         // Applying R.without function 
        const newArray = R.without(elementArray, array); 
        console.log(newArray) 
    </script> 
</body> 
  
</html> 

Output:

Example 2: When an array of objects is given and array is filtered by the array of object.

Javascript

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content= 
        "width=device-width, initial-scale=1.0"> 
    <title>NodeJS Ramda.replace() function</title> 
</head> 
  
<body> 
    <!-- By linking this script "R" is attached  
        as the global variable in the browser--> 
    <script src= 
"//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"> 
    </script> 
      
    <script> 
        let elementArray = [{ "a": 1 }, "b"]; 
  
        // Array of objects 
        let array = [{ "a": 1, "b": 2 },  
                { "a": 1 }, "c", 4, 5] 
  
        // Filtering array 
        const newArray =  
            R.without(elementArray, array); 
        console.log(newArray) 
    </script> 
</body> 
  
</html> 

Output:

Note: Please import these additional files by CDN:

“<script src=”//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js”></script>”

These commands will not work directly in chrome console or any browser without these additional files.

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