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JavaScript: creating own callback functions

Many methods in JavaScript uses callback functions. Let’s consider e.g. Array “map” method. You can have a variable containing array like: const numbers = [9, 8, 7, 6, 5, 4] and you can chenge all it’s elements by running a “map” method with a callback function which will do the same operation on every element in array, like e.g. multiplying…

The easiest REST API with NodeJS + ExpressJS + TypeScript

I will show you in this article how to build totally the easiest REST API build with NodeJS with Express plugin with TypeScript in place. This may sound as hard task to do, but with this short tutorial you will get everything working in just a few easy steps. You will be able to proceed further on your own. What…

JSON flatify

JSON flatify is an application which allows you to copy-paste JSON text or upload a JSON file and convert its content into flat JSON syntax. You can use here whatever JSON syntax you want – even complex nested objects and arrays with values, and JSON FLATIFY app will consume it, and give you nice and clean FLAT JSON file to…

XML to CSV

XML to CSV is application which allows you to copy-paste XML text or upload a XML file and convert its content into CSV file. You can use here whatever XML syntax you want – even complex nested objects and arrays with values, and XML TO CSV app will consume it, and give you nice and clean CSV file to download.…

JSON to CSV

JSON to CSV is application which allows you to copy-paste JSON text or upload a JSON file and convert its content into CSV file. You can use here whatever JSON syntax you want – even complex nested objects and arrays with values, and JSON TO CSV app will consume it, and give you nice and clean CSV file to download.…

Excel (xlsx, xls) or Open Office Calc (ods) to XML

Excel to XML is an application which allows you to upload a Excel file and convert its content into XML file. You can upload any kind of Excel extensions, like XLS, XLSX or Open Office Calc – ODS. As the result you will download a nice and clean XML file.  XML data format is widely used in software development…