JavaScript: Get all the elements of an array except the last one

JavaScript fundamental (ES6 Syntax): Exercise-215 with Solution

All Elements Except Last

Write a JavaScript program to get all the elements of an array except the last one.

• Use Array.prototype.slice(0, -1) to return all but the last element of the array.

Sample Solution:

JavaScript Code:

// Define a function 'initial' that returns a new array containing all elements of the input array except for the last element
const initial = arr => arr.slice(0, -1);

// Test the 'initial' function by creating new arrays without the last element
console.log(initial([1, 2, 3]));  
// Output: [1, 2]
console.log(initial([0, -1, -2]));
// Output: [0, -1]

Output:

[1,2]
[0,-1]

Visual Presentation:

Flowchart:

Live Demo:

See the Pen javascript-fundamental-exercise-215 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that returns a new array containing all elements of the original array except the last one.
• Write a JavaScript function that slices an array to exclude the final element.
• Write a JavaScript program that checks the length of an array and returns the array without its last item.
• Write a JavaScript function that uses pop() on a copy of an array to remove the last element and returns the result.

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