ar.slice(startInd): this will return a new array with the same elements as the original array starting from index startInd.ar.slice(): the method will return a new array with the same elements as the original array.There are three ways we can call this method: The slice method will return an array containing a portion of the items in the original array without changing the original array itself.
In the sections below, we'll review each Array method individually, the discuss the source of confusion between the two methods and what kinds of bugs can arise when the wrong method is used. They have similar names and similar functionalities, but using the wrong one can cause cause bugs which can be hard to track down. This is an optional value.When it comes to working with JavaScript arrays, one of the most common mistakes is confusing slice with splice. This is an integer value to indicate how many elements needs to be removed. The positive value of this value is greater than the size of the array. startIndex is from size - n, where n is 3 here. The value of startIndex is 23 which is more than the size of the array. The items are removed from index 5 and returned. So, it returned all items starting from index 0 and removed all items from the original array. StartIndex = NaN, starts from beginning of the arrayįor the first example, startIndex is 0. StartIndex length, starts from beginning of the array
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