blockchain node js example

, multiple libraries can simplify our development work. For example: 1) node-restify Home: https://github.com/mcavage/node-restify Restify is a streamlined and similar to the Express library. It is used to build the Node. js library of RESTful APIs. Installation: $ npm inst

This article mainly introduces node. buffer in js. description of the fill method. This article introduces the buffer. fill Method description, syntax, receiving parameters, use instances and implementation source code. For more information, see Method description: Fill the specified data in the buffer. Syntax: The Code is as follows: Buffer. fill (value, [offset], [end]) Receiving parameters:

This article mainly introduces Node. js package details, Node. A js package is a directory that contains the package in JSON format. json, Node. the js package basically follows the CommonJS specification. For more information, se

-thread, combined with 25% CPU usage ...... Is there a thread in the dual-core and four-line processes occupied by this sleep? In fact, I found that no thread was locked during this period, but this is not the credit of javascript, but the credit of intel hyper-threading. Because there are four threads, the essence is that the two processing cores can only be dual threads, but the cpu performs a time slice cutting trick. For example, the core CPU 01 i

This article mainly introduces node. buffer in js. the usage of the copy method. This article introduces the buffer. copy method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: Replace the buffer. Copy data from the source buffer and replace it with the specified location of the target buffer. Syntax: The Code is as f

This article mainly introduces Custom Event instances in node. js. A simple example. For more information, see the EventEmitter that inherits events, then you can register the event through the on; emit triggers the event and removeListener removes the event. A simple example is as follows: Var util = require ('

the function header. All functions are defined before use. Name constructors and callback functions as much as possible, so that you can see a clearer call stack during debugging. Try to define all member functions in the constructor through the prototype, define the attributes in the constructor, and then use the new keyword to create an object for the constructor. Avoid complex inheritance. If you want to inherit, use the inherits function in the util module whenever possible. For

This article mainly introduces node. buffer in js. buffer. description of the isEncoding method. This article introduces the buffer. buffer. isEncoding method description, syntax, receive parameters, use instances, and implementation source code. For more information, see Method description: Checks whether it is a valid encoding parameter and returns true or false. Syntax: The Code is as follows: Buffer.

This article mainly introduces node. buffer in js. buffer. description of the isBuffer method. This article introduces the buffer. buffer. isBuffer method description, syntax, receiving parameters, use instances and implementation source code. For more information, see Method description: Checks whether the target is a buffer object. Returns true or false. Syntax: The Code is as follows: Buffer. i

This article mainly introduces node. console in js. this document describes how to use the time method. time Method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: Start Time, which corresponds to console. timeEnd and records the time period. Syntax: The Code is as follows: Console. time (label) Receiving parameter

After you install node. js, choose a beneficial IDE for your development.After comparing multiple Ides, it is positioned on webstrom and sublime.There is a simple comparison:Webstorm feature is very rich, the front-end development tool of the synthesizer, compared to sublime slightly heavierSublime plug-in is also very rich, the interface is more beautiful, very light, also has a simple project management f

-thread, combined with 25% CPU usage ...... Is there a thread in the dual-core and four-line processes occupied by this sleep? In fact, I found that no thread was locked during this period, but this is not the credit of javascript, but the credit of intel Hyper-threading. Because there are four threads, the essence is that the two processing cores can only be dual threads, but the cpu performs a time slice cutting trick. For example, the core CPU 01 i

This article mainly describes how to use the path. dirname method in node. js. This article describes the method description, syntax, usage examples, and source code implementation of path. dirname. For more information, see Method description: Returns the path directory. Similar to UNIX directory commands. Syntax: The Code is as follows: Path. dirname (p) Because this method belongs to the path module,

This article describes how to use the path. isAbsolute method in node. js. This article describes the method description, syntax, examples, and source code implementation of path. isAbsolute. For more information, see Method description: Checks whether the path is an absolute path. An absolute path will be resolved to the same location, whether in the working directory or not. Syntax: The Code is as foll

Node. js package details, Node. js package details In Node. in js language, packages and modules are not essentially different. packages are further abstracted Based on modules. Packages encapsulate an independent function, it is

, and finally declare it.Let me release the Code directly, or directly go to the Node. js document to view it. The Code is as follows:# Include Using namespace v8; Handle RunCallback (const Arguments args) { HandleScope scope; Local Cb = Local : Cast (args

Give full play to the performance of Node. js programs and give full play to node. js A Node. JS process only runs on a single physical core. This is because you need to pay special attention when developing scalable servers. Beca

This article mainly introduces Node. callback and code design patterns in js asynchronous programming. Although long string parentheses during callback writing are not very nice in most cases, Node's asynchronous performance is indeed good, for more information, see the event mechanism and asynchronous IO, the biggest selling point of NodeJS, which is not transparent to developers. Developers need to write

Three Node. js code optimization methods you have not known, and three node. js codes are unknown. The running of Node. js programs may be limited by the CPU or input/output operations, but it is very slow. From the CPU perspectiv

This article mainly introduces how to run Node. js IIS extension iisnode installation configuration notes, iisnode extension can put Node. js programs are hosted in IIS. after hosting, various functions in IIS can also be used. if you need them, refer to your plans to use Node