TypeScript takes longer to write than JavaScript, as you have to specify types, so for smaller solo projects it might not be worth using it.Here's a short article I wrote demonstrating how TypeScript can prevent irritating bugs. Learning TypeScript will give you a better understanding, and a new perspective, on JavaScript.It's popular – knowing TypeScript will enable you to apply to more good jobs.And when working in a team, it is easier to see what the other developers intended to. Readability – it is easier to see what the code it supposed to do.Research has shown that TypeScript can spot 15% of common bugs.Is TypeScript worth it? Why you should use TypeScript TypeScript cannot be understood by browsers, so it has to be compiled into JavaScript by the TypeScript Compiler (TSC) – which we'll discuss soon. Here's an example: // JavaScriptįoo = 55 // foo has changed type from a string to a number - no problemįoo = 55 // ERROR - foo cannot change from string to number On the other hand, JavaScript is a dynamically typed language, meaning variables can change type. Static typing means that the type of a variable cannot be changed at any point in a program. The main reason for using TypeScript is to add static typing to JavaScript. TypeScript is a superset of JavaScript, meaning that it does everything that JavaScript does, but with some added features. TypeScript cheat sheet PDF What is TypeScript? This makes it easy to look up and revise concepts/syntax quickly. I also made a TypeScript cheat sheet PDF and poster that summarizes this article down to one page. All of the main TypeScript concepts (types, interfaces, generics, type-casting, and more.).How to set up a project with TypeScript.
What is TypeScript and why should I learn it?.TypeScript has become increasingly popular over the last few years, and many jobs are now requiring developers to know TypeScript.īut don't be alarmed – if you already know JavaScript, you will be able to pick up TypeScript quickly.Įven if you don't plan on using TypeScript, learning it will give you a better understanding of JavaScript – and make you a better developer.
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