reduce (( accumulator, currentValue, currentIndex, array ) => accumulator + currentValue, initialValue )

You can create an array in JavaScript using any of the following syntaxes:Ĭreate an array by encapsulating array elements in squared brackets:Ĭonst initialValue = 10. This index can be used to access or modify the items in the array. Arrays are ordered collections of items, so each item has an index. They are similar to other data structures, like lists and dictionaries, but they have some key differences. If you are working with JavaScript, arrays are something you can’t avoid, so knowing these 15 JavaScript array methods is not only helpful, but it is a must, and they are often the subject of interview questionsĪ JavaScript array is a data structure that stores multiple values in a single variable. This blog post will discuss 15 array methods in detail so you can start using them immediately!

Bonus: add and remove array elements with push() and pop() and shift()Īrrays are one of the most powerful data structures in JavaScript and are helpful for all sorts of tasks.

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