The Array.toSpliced() method is a new JavaScript function introduced in ECMAScript 2023 (ES14). It creates a shallow copy of an array with modifications specified by the provided parameters, without changing the original array. Syntax Parameters Parameter Description start (Required) The index at which to begin changing the array. Negative values count from the end of…
The Array.toSorted() method is a new addition to JavaScript, introduced in ECMAScript 2023 (ES14). It returns a new array with the elements sorted in the specified order, leaving the original array unchanged. Syntax Parameters Parameter Description compareFunction (Optional) A function that defines the sort order. If omitted, elements are converted to strings and sorted lexicographically…
The Array.toReversed() method is a new JavaScript function introduced in ECMAScript 2023 (ES14). It returns a new array with the elements of the original array reversed, leaving the original array unchanged. Syntax Parameters The toReversed() method does not take any parameters. Return Value This method returns a new array containing the elements of the original…
The Array.splice() method is a built-in JavaScript function used to add, remove, or replace elements in an array. It modifies the original array directly and is commonly used for tasks requiring precise control over array elements. Syntax Parameters Parameter Description start (Required) The index at which to start changing the array. Negative values count from…
The Array.some() method is a built-in JavaScript function that tests whether at least one element in an array passes a provided test implemented by a callback function. It stops execution and returns true when it finds an element that satisfies the condition, making it efficient for use cases where partial matches are sufficient. Syntax Parameters…
The Array.slice() method is a built-in JavaScript function that creates a shallow copy of a portion of an array into a new array. The selected portion is determined by the start and end indices. It does not modify the original array and is commonly used for extracting parts of an array or creating duplicates. Syntax…
The Array.shift() method is a built-in JavaScript function used to remove the first element from an array and return it. This method modifies the original array, reducing its length by one. Syntax Parameters The shift() method does not take any parameters. Return Value The shift() method returns: Example 1: Removing the First Element Example 2:…
There are multiple approaches to finding the sum of an array of numbers in JavaScript. 1. Using for Loop The for loop is a basic and widely used approach to sum the elements of an array. Initialize a variable to store the sum and iterate through the array, adding each element to the sum. 2….
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Flattening an array means converting a multi-dimensional array (an array containing nested arrays) into a single-dimensional array. There are different ways to Merge or flatten an array of arrays into a single array. Examples 1. Using Array flat() Method (ES2019) The flat() method is a built-in function introduced in ES2019 (ES10) that flattens an array…
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Given an array, the task is to replace an item in a JavaScript array. There are multiple ways to replace an item in an array in JavaScript. 1. Using Array splice() Method The splice() method is used to remove, replace, or insert elements into an array at a specified index. 2. Using Array map() Method…
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