Review, Research, and Discussion

1. Array.map()?

The map() method calls a callback function on every element of an array and returns a new array that contains the results.

1. Array.reduce()?

   The reduce() method executes a reducer function for each value of an array. reduce() returns a single value which is the function’s accumulated result. reduce() does not execute the function for empty array elements. reduce() does not change the original array.

2. superagent()?

   SuperAgent is a small HTTP request library that may be used to make AJAX requests in Node. js and browsers.

3. promises ?

Image result for promises js Promises in JavaScript represent processes that are already happening, which can be chained with callback functions. … Note: A promise is said to be settled if it is either fulfilled or rejected, but not pending.

1. Are all callback functions considered to be Asynchronous? Why or Why Not??

Simply taking a callback doesn’t make a function asynchronous. There are many examples of functions that take a function argument but are not asynchronous. … It iterates over each item and calls the function once per item. This can be used among other things to calculate total value from a property of each item.

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