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How To Use JavaScript Maps - .map() — step-by-step Javascript tutorial on Progressive Robot

How To Use JavaScript Maps – .map()

One of the most popular methods of iterating through datasets in JavaScript is the `.map()` method. `.map()` creates an array from calling a specific function on each item in the parent array. `.map()` is a non-mutating method that creates a new array instead of changing the original. In this tutorial, we’ll look at four noteworthy uses of `.map()` in JavaScript: calling a function of array elements, converting strings to arrays, rendering lists in libraries, and reformatting array objects.

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How To Build a Weather App with Angular, Bootstrap, and the APIXU API — step-by-step Javascript tutorial on Progressive Robot

How To Build a Weather App with Angular, Bootstrap, and the APIXU API

[Angular](https://angular.io) is a front-end web framework that allows developers to build single-page applications modeled around a _model-view-controller_ (MVC) design. In this tutorial, you’ll create a weather app using Angular, Bootstrap, and the APIXU API. You’ll be able to type a location into a search form and on submission of that form, see the current weather details for that location displayed in your app.

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How To Process Images in Node.js with Sharp — step-by-step Javascript tutorial on Progressive Robot

How To Process Images in Node.js with Sharp

Digital image processing is a method of using a computer to analyze and manipulate images. This tutorial covers using the Node.js library sharp to read an image and extract its metadata, resize, change and compress its format, crop, grayscale, rotate, and blur the image. As well as compositing two images into one, and adding text on an image.

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