If no elements are removed, an empty array is returned. If only one element is removed, an array of one element is returned. If you do not specify any elements, splice() will only remove elements from the array.Īn array containing the deleted elements.: The elements to add to the array, beginning from start.In this case, you should specify at least one new element (see below). If deleteCount is 0 or negative, no elements are removed. In JavaScript, array.splice() is a built-in function that modifies an array by adding new elements to it or removing/replacing the existing elements from.
However, it must not be omitted if there is any item1 parameter. If deleteCount is omitted, or if its value is equal to or larger than array.length - start (that is, if it is equal to or greater than the number of elements left in the array, starting at start), then all the elements from start to the end of the array will be deleted. : An integer indicating the number of elements in the array to remove from start.(In this case, the origin -1, meaning -n is the index of the nth last element, and is therefore equivalent to the index of array.length - n.) If start is negative infinity, it will begin from index 0. If negative, it will begin that many elements from the end of the array. In this case, no element will be deleted but the method will behave as an adding function, adding as many elements as items provided. If greater than the length of the array, start will be set to the length of the array. : The index at which to start changing the array.Note: As compared to the slice() method which. Splice (start ) splice (start, deleteCount ) splice (start, deleteCount, item1 ) splice (start, deleteCount, item1, item2, itemN ) Parameters The JavaScript splice() method changes the elements of the array by replacing or removing the elements, in place.