typescript vs javascript

There are some unique concepts in typescript that need to describe what has changed in the JavaScript object type. For example, the most unique concept is "declaration merging". Understanding this concept will be helpful for you to use typescript development in your current JavaScript project. It also opens the door to

Label:Original source: Http://www.typescriptlang.org/Handbook Based on the needs of web development and the worship of the nerves, intends to learn about typescript. The ability is limited, basically belongs to the translation on the basis of oneself cognition, the mistake inevitably, mainly is through the translation to study. Basic typeIn programming we need to use some simple data elements, such as: numeric, string, structure, Boolean, and so on.As

typescript We all know that JavaScript is not an object-oriented language, and that JavaScript can handle a variety of requirements when the Web front-end is not very complex before, but when the current development is more and more complex, JavaScript becomes more and more powerless, And

Typescript is one of the core design principles is type checking, through the use of interface (interfaces) can be type checking, to meet the traditional object-oriented thinking, conducive to effective development, effectively avoid type conversion problems. In typescript, interfaces are used as constraints, and when translated into JavaScript, all interfaces a

Common ErrorsThe following lists some common errors that are frequently encountered during the use of the typescript language and compilers ."Tsc.exe" exited with error code 1. Solution: Check the file encoding to UTF-8- https://typescript.codeplex.com/workitem/1587External Module XYZ cannot be resolved Solution: Check that the module path is case sensitive - https://typescript.codeplex.com/workitem/2134mixinsAlong with traditional OO hierarchies, ano

TypescriptinterfaceFeel Typescript interface is a chicken, rather than all defined as class, the original is as followsIt's not a Angular ' s fault. An interface is a TypeScript design-time artifact. JavaScript doesn ' t has interfaces. The TypeScript interface disappears from the generated

Original link: https://leanpub.com/essentialtypescript/read#introduction 1. What is typescript. Typescript is a superset of JS, it adds a static type of support to JS. Read a paragraph of JS code: var bill = { name: "Bill", Quack:function () { document.write ("quack!"); } function Sayquack (target) { target.quake (); } Sayquack (Bill);This code will run wrong because, in Say

As one of the initiatives to improve JavaScript Application Development, Microsoft recently released TypeScript. This new language is a superset of JavaScript specifications. It adds type checks and static code analysis, and generates native JavaScript. These features are intended to enable developers to benefit from t

In this note, let's take a look at the functions in typescript.function typeThere are two ways to define a function in JavaScript, such as the following:1 // named Functions 2 function Add (x, y) {3 return x+y; 4 }56// anonymous functions 7var function return x+y; };The corresponding wording in typescript is as follows:1 function Add (X:number, Y:number): number {2 return x+y; 3 }45varfunctionreturn

First, the most complete Chinese typescript Introductory Guide detailed case tutorialDocument downloadSecond, the Code caseSource code DownloadMobile phone sweep has a surprise ...=============================================================================================================== ==1, detailed installation articles please seehttp://blog.csdn.net/jilongliang/article/details/219429112. Typescript O

This is not about what typescript is, Typescript is a superset of JavaScript, but in the process of using or learning, We need to compile a well-written. ts file into a. js file before it can be used, so it adds a lot of trouble to the beginning of the learning process, so it's why I have to build an automated development environment that can save a lot of time o

Interface Details in TypeScript One of the core design principles of TypeScript is the type check, which can be checked through Interfaces to satisfy the traditional Object-oriented Thinking, facilitate effective development and effectively avoid type conversion problems. In TypeScript, interfaces are used as constraints. When compiled into

In typescript, interfaces are used as constraints, and when translated into JavaScript, all interfaces are wiped out because JavaScript does not have the concept of interfaces. Let's take a look at a simple example: function Printlabel (labelledobj: {label:string}) { console.log (Labelledobj.label); } var myobj = {size:10, Label: "Size Ten Object"}; P

namespaces to avoid conflicts with other types if the type is not used directly or cannot have a unique name. callback function Many JavaScript libraries receive a function as a parameter and then call it by passing in a known parameter. When signing for these types and functions, do not mark this argument as an optional parameter. The right way to think is "what kind of parameters will be provided." ", not" what parameters will be used. ”。

Original link: Node-webkit tutorial (15) Debug typescriptThe content of this article also applies to the Chrome browser.In the configuration item for the Chrome developer tool, there is a sourcemap option to configure the JavaScript source and generate code relationships. If you can debug the typescript code directly in the browser, we can really appreciate the joy of t