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JavaScript: Remove specified elements from the right of a given array of elements

JavaScript fundamental (ES6 Syntax): Exercise-19 with Solution

Write a JavaScript program to remove specified elements from the right of a given array of elements.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
function remove_from_right(arr, n = -1){
  return arr.slice(n); 
}

console.log(remove_from_right([1, 2, 3]));
console.log(remove_from_right([1, 2, 3], -1));
console.log(remove_from_right([1, 2, 3], -2));
console.log(remove_from_right([1, 2, 3], -4));

Sample Output:

[3]
[3]
[2,3]
[1,2,3]

Pictorial Presentation:

JavaScript Fundamental: Remove specified elements from the right of a given array of elements

Flowchart:

flowchart: Remove specified elements from the right of a given array of elements

Live Demo:

See the Pen javascript-basic-exercise-1-19 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]]