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

JavaScript fundamental (ES6 Syntax): Exercise-18 with Solution

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

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
function remove_from_left(arr, n = 1){
  return arr.slice(n); 
}
console.log(remove_from_left([1, 2, 3]));
console.log(remove_from_left([1, 2, 3], 1));
console.log(remove_from_left([1, 2, 3], 2));
console.log(remove_from_left([1, 2, 3], 4));

Sample Output:

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

Pictorial Presentation:

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

Flowchart:

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

Live Demo:

See the Pen javascript-basic-exercise-1-18 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to split values of two given arrays into two groups. If an element in filter is truthy, the corresponding element in the collection belongs to the first group; otherwise, it belongs to the second group.
Next: Write a JavaScript program to remove specified elements from the right of a given array of elements.

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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]]