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Resolve the use of the domain module in Node. js Exception Handling, node. jsdomain
NodeJS provides the domain module to simplify Exception Handling for asynchronous code. Before introducing this module, we need to first understand the concept of "domain. Simply put, a domain is a
Use pure Node. JS to pop up the Windows system message box instance (MessageBox), node. jsmessagebox
Node. JS is a console program. If you want to pop up a Windows Prompt box from Node.
First, prefaceCompared to JS this direct end, full of thorny path, jquery is undoubtedly a broad road, enough concise, easy-to-use gave it a glorious position. However, after all, is a plug-in around the road, when the path to walk to become a road, the road has lost his own advantage.Native JS is not as good as jquery, convenient, or not so easy for us to
Above is a TR, no ID, now on one of the name Wgrkbillentry[0].fauxqty TD double-click event, the following is the double-click eventfunction Fun_tevl (ele) {Gets the parent node of the current node TRvar tr1 = Ele.parentNode.parentNode;Gets the first child node of the parent node itemvar B=tr1.cells[1].childnodes[0].va
Use jQuery in Node. js and node. jsjquery
First, install jquery and npm install jquery. The installed version is 3.1.0.
Next, first we will use var $ = require ('jquery ').
Save the following code as app. js
Var $ = require ('
Use Javascript Generators in Node. js for details, node. jsgenerators
Generators is a collaborative program (coroutine for short: coroutine) style in Javascript. It refers to the functions that can be paused and restored during execution, this function is configured with a star symbol in functi, such as function *. Som
Detailed description of the use of client sessions in Node. js programming, node. jssession
Static websites are easy to expand. You only need to cache all the data and do not need to consider combining stateful content from different servers to users.
Unfortunately, most Web applications
Use of the fs. close method in node. js, node. jsfs. close
Method description:
Close the file asynchronously.
Syntax:
Copy codeThe Code is as follows:Fs. close (fd, [callback (err)])
Because this method belongs to the fs module, we need to introduce the fs module (var fs = require ("fs") before
The use of the console. dir method in node. js is described as follows: node. jsconsole. dir
Method description:
Pass obj as a parameter to util. inspect and execute the command to print the returned result to stdout.
This function ignores any custom inspect () function objects.
Syntax:
Copy codeThe Code is as fol
This article mainly introduces socket in node. io event Usage Details. For more information, see socket. the io class library can not only send messages to each other, but also send events to each other through the emit method of the socket port object.
In the previous event, emit said that it was used to manually trigger the event.
The Code is as follows:
Socket. emit (event, data, function (data1, data2 ......){});
When you
Nodejs added a cluster module after v0.6.x to implement multi-process. It uses the child_process module to create and manage processes and increase program performance on multi-core CPU machines. This article describes how to create multiple threads using the cluster module. All friends who use nodejs know that node is single-threaded. That is to say, it runs on an 8-core CPU and can only
node's handy tip--Compression codeDownload ImageCompress CodeI believe many front-end students will be on the line before the compression JS code, now Gulp Webpack Grunt ... can be easily achieved. But the problem comes, these will not, it is necessary to face dozens of JS files back and forth "copy-compress-Create-paste", this is too impersonal.It can be easily implemented with
This article is one of my recent thoughts on Node. js learning and I will discuss it with you.
HTTP server of Node. js
Using Node. js can easily implement an http service. The simplest example is the official website example:Copy
Use socket. io and node. js to build a timely communication system, socket. ionode. jsSocket. IO is a websocket library, including the client js and the server nodejs. Official Address: http://socket.ioUse socket. io and nodejs to build a websocket ServerSocket. io can not only build the websocket service of the client
This article mainly introduces the use of Node-based. js build tool Grunt to release ASP. the NETMVC project tutorial and automated build tool Grunt has compilation, compression, unit testing, and other functions. It is very powerful. If you need it, refer to the following.
Grunt IntroductionGrunt is a construction tool based on
Use Meteor with Node. js to compile a real-time chat application example, meteornode. js
I often see Derby. the framework for js comparison is Meteor. js. similar to Derby, it can also update views in real time on multiple clients
Node. JS has been very popular recently, not only the open-source community is very concerned about it, but Microsoft has even provided official support for it to make node. JS can also run on Windows, Which is node. the further popularity of
8888 Port //terminal prints the following information Console.log ( ' Server running at http:// 127.0.0.1:8888/' ); In this way, a simple HTTP Server, even if it is finished, the input node app.js can be run, and then access will see the output results.Why use node. jsFace a new technology, ask a few why is always good. Since PHP, Python, and Java can all be
First, install, download the installation from the official website, install basic always click on the next step on the line. Note: node. js is Python-based, and it is best to install Python on your computer before installing node. js, preferably Python2.7 or 2.6.Second, Cmd enters the command line, enter
Use q. js in node. js to implement api promise
Here we will look at how to use q. js to implement node api promise.
I. Everything starts with install
The Code is as follows:
Npm insta
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