log ( months ) // adding by index, 5 elements removed log ( months ) // adding by index, no element removedĬonsole. splice ( 1, 0, 'Feb', 'March' ) Ĭonsole. Var months = // adding by index, no element removed log ( months ) // removing by index and number of element
Var months = // removing by indexĬonsole. Removing an element using splice method :
Number of elements: number of element to remove Lets see how to add and remove elements with splice( ):Īrray. The splice( ) method changes an array, by adding or removing elements from it. The name of this function is very similar to slice( ). slice ( 2, 4 )) // Extract array element from index 1 and n-1 indexĬonsole. slice ( 2 )) // Extract array element from index 2 and n-1 indexĬonsole. Var employeeName = // Extract array element from index-2Ĭonsole. Lets see the below example for slice method : Until: Slice the array until another element index It doesn’t change the original array.įrom: Slice the array starting from an element index 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.The slice( ) method copies a given part of an array and returns that copied part as a new array. 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. 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. splice has an extra letter, 'p', compared to slice. I remember the difference between slice and splice using a mnemonic. insert 'juliet' and 'zeke' at 3rd index // returns Ĭonsole. splice ( 3, 1, 'juliet', 'zeke' ) // remove 'harper'.
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