How do you remove the last value in an array?

In JavaScript, the “shift()” method is used to omit the first array element. Whereas the “pop()” method omits the last array element. These methods can be used in combination to remove the first and last array elements.

Syntax

array.shift(), array.pop()

Here, “array” refers to a defined array on which the shift() and pop() methods will be applied to remove the first and last array elements, respectively.

Look at the stated example for the demonstration.

Example

In the following example, initialize an array named “remArr” with integer and string value in it:

var remArr= [1, 2,'a']

Now, we will apply the “shift()” method to remove the first element “1” from an array and display it on the console using the “console.log()” method:

remArr.shift()

console.log("Array after removal of first element is:", remArr)

After that, we will use the “pop()” method to remove the last element “a” from an array and display it:

remArr.pop()

console.log("Array after removal of last element is:", remArr)

Lastly, print out the update array on the console:

console.log("The New Array becomes:", remArr)

Output

Method 2: Remove First and Last Array Elements in JavaScript Using slice() Method

In JavaScript, the “slice()” method slices up the array elements and returns them as a new array. You can apply this method to slice the first and last array elements by accessing their indexes and removing them from an array.

Syntax

array.slice(start, end)

Here, “start” and “end” refer to the first and last index of the array.

The following example explains the stated concept:

Example

Now, we will apply the “slice()” method to the “remArr” string and refer to the start and end indexes “1” and “-1”, respectively. This will result in removing the elements at first and last indexes from the given array:

var remArr= [1,2, 'a]

var firstLast= remArr.slice(1, -1)

Lastly, we will display the resultant array on the console:

console.log("The New Array after removing First and Last Element becomes:", firstLast)

Output

We have provided all the simplest methods to remove the first and the last element in the array in JavaScript.

Conclusion

For removing the first and the last array elements, you can use the “shift()” and “pop()” methods for removing the first and last elements in an array respectively and the “slice()” method to specify the index of the element in its argument, which needs to be removed. Both methods change the length of the original array. This write-up explained the methods to remove the first and last array elements in JavaScript.

An array stores every element at a particular index. The index for the elements starts from 0 to the array’s length minus 1.

In this tutorial, different methods are discussed for removing the last element from an array in JavaScript.

Use the [10, 11, 12, 13, 14, 15, 16] 0 to Remove the Last Element From an Array JavaScript

The

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

We can use it to remove the last element from an array.

Check the code below.

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]

Use the [10, 11, 12, 13, 14, 15, 16] 2 to Remove the Last Element From an Array JavaScript

The

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

For example,

var array = [10,11,12,13,14,15,16,17];
array.pop();
console.log(array)

Output:

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

Use the [10, 11, 12, 13, 14, 15, 16] 4 to Remove the Last Element From an Array in JavaScript

The

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

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

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

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

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

Check the code below.

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]

Use the var array = [10,11,12,13,14,15,16,17]; array.pop(); console.log(array) 0 to Remove the Last Element From an Array in JavaScript

The

var array = [10,11,12,13,14,15,16,17];
array.pop();
console.log(array)

To remove the last element using this function, see the code below.

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]

Use a User-Defined Method to Remove the Last Element From an Array in JavaScript

We can create a new function that takes the array as an input and reduces the array’s length if the length of the array is greater than zero.

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