Node.js is an entity that runs in a virtual environment, using JavaScript as the primary scripting language. It uses a simple V8 environment to run on, which helps in the provision of features like the non-blocking I/O and a single-threaded event loop. 4. Where is Node.js used? Node...
Ans:Node.js is rapidly picking up consideration as it is a circle-based server for JavaScript. Node.js enables the client to compose the JavaScript on the server, which approaches things like HTTP stack, document I/O, TCP and databases. Q15. What are the two contentions that async.queue ...
Node.js is an open source and cross-platform JavaScript runtime environment. Run the V8 JavaScript engine (Google Chrome's core) outside the br...
When a function takes one argument and returns a new function to handle new arguments, it will go on until all arguments are provided and the result is computed. This is called Currying. Example – currying(1)(11)(111); function currying(num1) { return function(num2){ return function(...
io.sockets.on('connection',function(client) { client.on('answer',function(question, answer) { client.broadcast.emit('answer', question, answer); }); redisClient.lrange('questions', 0, -1,function(err, messages){ messages.forEach(function(message){ ...
the versions of Node.js, the npm command, and the operating system you are using an npm-in-ci header, showing whether the command was run on a continuous integration server the scope of the package for which you ran npm install, as an npm-scope header a referrer header that shows th...
aLoggableComponent provides a logging mechanism, be it aconsole, aWinston Node.js logging setupon our own server, or some 3rd party logging service that records logs via JSON requests First, let’s model this with React’s ES5 API andmixins. ...
NodeJs(2) chatgpt(2) Zookeeper(1) Scala(1) logback(1) Java基础(1) git(1) flume(1) docker(1) 推荐排行榜 1. MySQL自动设置create_time和update_time(6) 2. 自己的六年程序生涯小结(3) 3. 【异常】airflow-psutil/_psutil_common.c:9:20: fatal error: Python.h: No such file or directo...
两个node程序之间怎样交互?参考答案: 用fork嘛,上面讲过了.原理是子程序用process.on, process.send,父程序里用child.on,child.send进行交互. 代码演示1) fork-parent.js var cp = require('child_process'); var child = cp.fork('./fork-child.js'); child.on('message', function(msg){ console....
Mocha is a JavaScript-based test framework for asynchronous testing that works on Node.js and in browsers. It includes a built-in webpack precompiler. 15. What is the usage of $parent? Hide Answer In the child component, $parent is used to retrieve the parent component instance. It's mo...