Say, we have to remove three elements from the marks array from index 2.We will first understand how to remove elements from the beginning of an array. Removing Elements from the Start of an Array We can remove elements both from the start and end of an array in JavaScript. In this section, We will take a look at how to remove elements from various positions in an array in JavaScript using the splice() function. Let’s now learn what are the use cases of the splice() method. It is also supported in older versions of Internet Explorer. The splice() method is a standard feature of the ECMAScript JavaScript and is supported by all modern browsers, including Google Chrome, Mozilla Firefox, Safari, and Microsoft Edge. It can be implemented in various ways which we will understand in the further sections. Note that, this is the general syntax of the splice function. If no item is to be added, the parameter is simply not given in the function. items: Represents the list of items to be added to the array.remove_count: Specifies the number or the count of the items to be removed from the array.It is a required parameter and can have positive, 0, or negative values. index: The index from which the array must be changed/modified.array_name: Name of the array to be spliced.The general syntax of the array splice() method in JavaScript is: array_name.splice( index, remove_count, items) Note that the splice() method modifies the original array. The array splice() method in JavaScript allows one to modify the contents of an array by removing, adding, or replacing elements. To perform the splice operation, we have an inbuilt function. So, we can perform splicing on an array if we want to remove, add, or replace elements. If we want to push some more elements to an array or delete some elements already present in the array, we splice the array. Splice means to unite or combine two separate elements into a whole. In JavaScript, we do not need to specify the type of the array at the compile time as it is a dynamically typed language. In the code above, we have made integers array marks containing all integers, a characters array grade consisting of all elements as characters, a strings array ‘favtutors’ consisting of all strings, and a boolean present array consisting of all boolean values. Let us take a look at how to declare and use arrays in Javascript. An array can not be a combination of integers and characters, or integers or strings. An array can contain all integers, all characters, or all strings as the elements. What are Arrays in JavaScript?Īrrays are linear data structures used to store homogenous data, i.e.

add, remove, or replace elements using the splice() method. In this article, we will be taking a deep dive into Javascript arrays and how we can modify an array, i.e.

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