JavaScript removing the last element from an array is a useful skill that any programmer should know. Suppose you are unaware of how to perform this task; check out this guide. It will teach you how to do so in several approaches.

In JavaScript, the array is the variable that stores a collection of values or elements. The array keeps each element in a specific index, which begins at 0 value to the length of the array minus 1.

JavaScript Removing The Last Element From An Array Using array.prototype.splice()

You can use the method splice() to modify an array by replacing or removing elements. This method will bring back the removed elements in case any are deleted. If not, the empty array will be delivered.

It can be applied to an array to eliminate the last entry. Here is an example for you to use as a reference.

var array = [10,11,12,13,14,15,16,17];

array.splice(-1,1);

console.log(array);

Output.

[10, 11, 12, 13, 14, 15, 16]

JavaScript Removing Last Element From Array Using array.prototype.pop()

The simplest way to delete the last element from the array is to use the function pop(). After removing the end element from the array, it will return the eliminated element.

Below is a sample.

var array = [10,11,12,13,14,15,16,17];

array.pop();

console.log(array)

Output.

[10, 11, 12, 13, 14, 15, 16]

JavaScript Removing The Last Element From An Array Using array.prototype.slice()

slice() copies the defined portion from start to stop (keep in mind the end isn’t included). The array’s indices are the stop and start values. This method will give back the updated array.

Use the following code as a reference.

var array = [10,11,12,13,14,15,16,17];

array = array.slice(0,-1);

console.log(array);

Output.

[10, 11, 12, 13, 14, 15, 16]

JavaScript Removing The Last Element From An Array Using array.prototype.filter()

When a function is supplied, the method filter() gives back a changed array.

Observe the following code to see how this method deletes the element in an array.

var array = [10,11,12,13,14,15,16,17];

array = array.filter((element, index) => index < array.length - 1);

console.log(array);

Output.

[10, 11, 12, 13, 14, 15, 16]

JavaScript Removing The Last Element From An Array Using A User-Defined Function

The last approach to deleting the last element from an array is using a user-defined function. When the array’s length exceeds zero, you can develop a function that accepts this array as its input and shortens the length.

Check out this sample code.

var array = [10,11,12,13,14,15,16,17];

function removeElement(arr) {

  if(arr.length > 0)

    arr.length --;

  return arr

};

var newArray = removeElement(array);

console.log(newArray);

Output.

[10, 11, 12, 13, 14, 15, 16]

The Bottom Line

Above are the easiest ways to complete the task of JavaScript removing the last element from an array. You can try all these approaches and pick the most suitable one for you.Suppose you want to get the last element of an array in JavaScript; check out this tutorial. It offers many different ways that can help you complete this task.