Javascript Es6 Map Function
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Javascript Es6 Map Function
The following code takes an array of numbers and creates a new array containing the square roots of the numbers in the first array. Map() calls a function once for each element in an array. Celsius) that parameter refers to the current element being iterated in filter()'s foreach.
Convert the map to an array. The this argument will be used inside the callback function. Map() does not change the original array.
It stores the data in an ordered collection and remembers the inserted order.
// roots is now [1, 2, 3] // numbers is still [1, 4, 9] copy to clipboard. In addition, a map object remembers the original insertion order of the keys. The parent array, where to extract the new array.map(): It stores the data in an ordered collection and remembers the inserted order.
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