mastering typescript

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

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 on some mechanical work.

For the program we need basic data units, such as: numbers, strings, structures, Boolean and other data structures. In typescript we support many of the data type systems that you expect to have in JavaScript. Boolean In JavaScript and typescript, there is also the most basic logical assertion value true/false, using the ' Boolean ' type. 1var Isdone:boolean = false;Number All numeric types, such as Javascr

Typescript is a superset of JavaScript, and typescript generates JavaScript code after compilation. The biggest feature of typescript is the type, so it's called typescript. Typed typescript appear to be easier to maintain than weak type JavaScript. There are a total of 7 b

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 type checks... SyntaxHighlighter. al as one of the initiatives to improve JavaScript Application Development, Microsoft recently release

Recently contacted Typescript, feeling very strong, but also have some problems.For example, we normally write JS, as long as the other JS library into the page, and even as long as added to the project, ReSharper will automatically analyze him, and provide grammar can only sense, write code very comfortable.However, since Typescript is a strongly typed language, he does not allow other unknown JS libraries

JavaScript is the typescript code that is available. Exceptions: the WITH () function and the const keyword for firefox. Variable types cannot be changed dynamically Variables that do not use VAR in the variable JS are global variables TS inside this will be an error. TS Global variables need to declare var myvar = 0 at the highest level of the program; Type TS has optional type detection: main type, array, enum, type strong Interface TS int

Forced type conversions for typescript Converting a number to a string in typescript will cause an error: var a:number = 12345;var b:string = Laygroundsingle.ts (24,18): Error ts2352:neither type ' number ' nor type ' string ' is assignable to the other. This writing is not an error, but there are no eggs to use: var a:number = 12345;var b:string = Console.log (typeof B)"Number" playgroundsingle.js:19:1

The front end in this direction, the ability to accept new things and speed determines your position in the entire industry. NG2 has not yet released the official stable version, but I think for me this time is the best time to store, so began to ng2 the road of learning. Contact with Ng2 before also contact with a Avalon things, but do not know where the phase grams, is not smooth, and then think, are the same, and learn more reference to the NG2. NG2 support

Use TypeScript in WebStorm TypeScript can also be developed using Visual Studio.TypeScript official website address: (http://www.typescriptlang.org /)1. Install WebStorm first WebStorm (https://www.jetbrains.com/webstorm)2. Install Node. js1. download and install Node. js node-v0.12.4-x64.msi Baidu Network Disk download: http://pan.baidu.com/s/1jG3pm9C For more information, see: ----------------------------

Modules, types, interfacesTypescript modules are used for code organization, similar to the C # namespace. A module can contain multiple classes and interfaces. Classes and interfaces can be privatized or exported, and the export means public, allowing other modules to access them.Typescript class and C # have the same class meaning. In fact, one of the highlights of typescript is that he hides JavaScript's prototype design, but instead uses a more po

TypeScript is a JavaScript superset. after TypeScript is compiled, JavaScript code is generated. TypeScript is typed, which is called TypeScript. Compared with weak JavaScript, typed typescripts are easier to maintain. There are 7 basic types in TypeScript. 1. boolean The

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 JavaScript, all interf

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

This article will briefly introduce several basic types of typescript. There are several basic types of typescript: Boolean Number String Array Tuple Enum Any There is also a void type, which is primarily used to identify the type of the method return value.Here are some simple examples to illustrate the basic usage of these types1 //

Decorators is a feature of TypeScript that is becoming more and more common in many major libraries. This lesson walks-through what decorators is and how to create your own.Nomarl to decorate a object:Const PERSON = {name: ' John '}; function Addage (age) { returnfunction(person) { return { , name:person.name } = addage (person); Console.log (John);//{name: "John", age:30} In

A recent project, the use of typescript to write JS script, the results are riddled with errors, repair also let me summarize the TS in how to use this. TS provides static types similar to C # and Java (strongly typed), declaring a function directly in global and namespace global and using the Functions keyword (which is the function keyword of JS), while in class you cannot use function to declare a method. Let's compare it to the C # difference

This article describes how to define and use methods in Typescript. I. Method standard declaration and use1 // Method Declaration 2 function func (X:number, Y:number): number {3 return x + y; 4 }In Typescript, a method declaration can clearly define the type of each parameter, and the type of the return value. At compile time, the compiler checks whether the return value type of the method body con

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 JavaScript, all interfaces are erased because JavaScript does not have interfaces. Let's take a lo

1, install sublime text3, there are many online, can also leave contact and I want to, I do not know how to upload the file here, know the pro can tell me a bit. 2, download typescript, Address: https://visualstudiogallery.msdn.microsoft.com/2d42d8dc-e085-45eb-a30b-3f7d50d55304, installation.3, here the key introduction several sublime Text3 development typescript plug-in1, t3s,: Https://github.com/Railk/T3