JavaScript: Takes a variadic function and returns a closure that accepts an array of arguments to map to the inputs of the function

JavaScript fundamental (ES6 Syntax) exercises, practice and solution: Exercise-138 with Solution

Variadic Function with Array Inputs

Write a JavaScript program that takes a variadic function and returns a closure that accepts an array of arguments to map to the inputs of the function.

Note: Use closures and the spread operator (...) to map the array of arguments to the inputs of the function.

• Use a closure and the spread operator (...) to map the array of arguments to the inputs of the function.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2

// Define the 'spreadOver' function.
const spreadOver = fn => argsArr => fn(...argsArr);

// Create a new function 'arrayMax' that spreads its arguments and passes them to 'Math.max'.
const arrayMax = spreadOver(Math.max);

// Test the 'arrayMax' function with an array of numbers.
console.log(arrayMax([1, 2, 3])); // Output: 3

Output:

3

Visual Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-138-1 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that transforms a variadic function to accept a single array of arguments instead.
• Write a JavaScript function that wraps a variadic function so that it can be invoked with an array of parameters.
• Write a JavaScript program that uses the spread operator to map an array to a function expecting multiple arguments.

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