Every number can be represented as a word by using the number as key and. Arr.map (function (element, index, array) { }, this); Map in javascript is a collection of keyed data elements, just like an object.
Javascript – How Can I Map Through An Object In Reactjs? – Stack Overflow from stackoverflow.com
Each will return a new array based on.
Js Map Return Object Let Finalarray = Arr.map(Callback( Currentvalue[, Index[, Array]]), Arg) Following Are The Meanings Of These.
But the main difference is that the map allows keys of any type. Delete() removes a map element specified by the key: It returns the map object itself therefore you can chain this method with other methods.
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