![]() string.split (separator, limit) Separator: Defines how to split a string by a comma, character etc. It takes 2 parameters, and both are optional. It divides a string into substrings and returns them as an array. The split ( ) method is used for strings. And you're equipped with a handy mnemonic, that splice compared to slice has an additional letter, 'p', which helps you remember that splice mutates and optionally adds or removes from the original array. Slice ( ) and splice ( ) methods are for arrays. The method returns items (from arrays) or characters (from strings) according to the provided indices. In addition, the method takes two values, the start and end. You now know that slice makes a shallow copy of the original array, while splice mutates the original array and optionally adds or removes elements. The slice () method is a part of both the Array and String prototypes, and can be used with either type of object. The slice method returns a copy of a part of a string or array based on the index selection passed. ConclusionĪnd there we have it! This blog goes over the differences between slice and splice. And because splice can add and remove stuff to the original array, that means that it also mutates the original array. Because of the extra letter, I associate the additional letter to splice's use of adding or removing from the original array. The slice() method returns a new array that contains the elements of the original array starting at position start and ending at the element position before. slice returns a sub-set of the original array, with the original array remaining untouched. splice has an extra letter, 'p', compared to slice. An important consideration relating to the answer by insomniac is that splice and slice are two completely different functions, with the main difference being: splice manipulates the original array. I remember the difference between slice and splice using a mnemonic. Both start and end can be negative, in that case position from array end is assumed. The syntax is: arr.slice ( start, end) It returns a new array copying to it all items from index start to end (not including end ). insert 'juliet' and 'zeke' at 3rd index // returns Ĭonsole. slice The method arr.slice is much simpler than similar-looking arr.splice. splice ( 3, 1, 'juliet', 'zeke' ) // remove 'harper'.
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