JS Array Functions

Not really next-gen JavaScript, but also important: JavaScript array
 functions like map() , filter() , reduce()  etc.

You’ll see me use them quite a bit since a lot of React concepts rely on working with arrays (in immutable ways).

The following page gives a good overview over the various methods you can use on the array prototype – feel free to click through them and refresh your knowledge as required: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array

Particularly important in this course are:

• map()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
• find()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
• findIndex()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
• filter()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
• reduce()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce?v=b
• concat()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat?v=b
• slice()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
• splice()  => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice