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Let's see 3 different ways to remove an element at the end of the array
I am a Front end developer currently working on React JS, HTML, CSS, Python, Vue JS, Webpack, Babel, AEM etc.
Kritika Pattalam Bharathkumar, short and sweet. Thanks for sharing. I wrote a bit different one sometime back about emptying an array :)
Thank you. I was able to find the article you mentioned about. It's a great one.
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Kritika Pattalam Bharathkumar | Web Developer - The official blog of Kritika Pattalam Bharathkumar
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Front End Engineer | Writes about HTML, CSS, JavaScript and everything related to web development | Follow me on Twitter let's chat.
As part of this blog we are going to see how to remove an element at the end of the array in JavaScript using the following methods.
Array is an ordered set of list of values, where each value is specified by an index. And a single array can hold different types of values. eg, a single array can hold both strings and integers.
Lets consider the below set of array, with length 6.
let arrayExample = [1, 2, 3 ,4, 5, 6]
Lets reduce see how we can remove the last element in the array
By explicitly setting the length of the array to be less, will delete the last value automatically
let arrayExample = [1, 2, 3 ,4, 5, 6];
arrayExample.length = 5; // Changing the length of the array
console.log(arrayExample); //Output : [1,2,3,4,5];
As per MDN docs, "The pop() method removes the last element from an array and returns that element. This method changes the length of the array".
let arrayExample = [1, 2, 3 ,4, 5, 6];
arrayExample.pop(); // removes the element 6
console.log(arrayExample); //Output : [1,2,3,4,5];
In the above example , the last element in the array is "6". As per pop() method the last element in the array is removed.
As per MDN docs, " The splice() method changes the contents of an array by removing or replacing existing elements and/or adding new elements in place."
let arrayExample = [1, 2, 3 ,4, 5, 6];
arrayExample.splice(arrayExample.length - 1); // returns elements up until 5
console.log(arrayExample); //Output : [1,2,3,4,5];
In the above example, we specify the index value as array length -1 which is 5. Hence it returns the array up until 5 array elements.
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