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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

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 
const spreadOver = fn => argsArr => fn(...argsArr);
const arrayMax = spreadOver(Math.max);

console.log(arrayMax([1, 2, 3]));

Sample Output:

3

Pictorial Presentation:

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

Flowchart:

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

Live Demo:

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


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JavaScript: Tips of the Day

Chunks an array into n smaller arrays

Example:

const tips_chunkIntoN = (arr, n) => {
  const size = Math.ceil(arr.length / n);
  return Array.from({ length: n }, (v, i) =>
    arr.slice(i * size, i * size + size)
  );
}
console.log(tips_chunkIntoN([1, 2, 3, 4, 5, 6, 7,8], 4)); 

Output:

[[1,2],[3,4],[5,6],[7,8]]