node js deep learning

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JS to the end: node learning Note 4

instead of displaying it! After the download is the Picture. This is because we did not give an IMG tag to ask the browser to display this imageSurefire PlanIn order for the text to display normally, use the following code:varhttp= require("http");varFs= require("fs");http.Createserver(function(req,Res{ //request for picture if(req.Method == ' GET ' req.URL.substr(-4)==". jpg"){ FS.Stat(__dirname+req.URL,function(err,Stat{ if(err|| !Stat.Isfile()){ Res.Wr

node. JS Framework Strongloop Learning notes (i)

node. JS Framework Strongloop Learning notes (i) I am using node. js to do the phone backstage, find the framework found Strongloop quite suitable, but found no Chinese tutorial, so in their own study, do a note, to facilitate other people like me reference (my engl

node. JS Learning Notes

Learning website: http://www.nodejs.net/a/20141016/232139.html;Note: Describes how to benefit JavaScript as a server-side script through NODEJS Framework web development. The NODEJS framework is a V8-based engine and is the fastest JavaScript engine available today. The Chrome browser is based on V8, and opening 20-30 pages is a smooth one. The NODEJS Standard Web Development Framework Express helps us quickly build web sites that are more efficient t

node. JS Learning

All asynchronous I/O operations in node. JS will send an event to the event queue when it is finished. The event is provided by the Eventemitter object.node. js Event Loop:The node. JS program starts with the event loop, to the event loop, and all the logic is the callback f

node. JS Reference Learning Address

some time ago, node. JS has been studied since the laptop hard disk has collapsed, but it is very much wanted to learn, just because of the recent efforts to learn English. Outside of the technology also needs to do well, we are not for the technology, after all, technology is our survival of a good skill, only so that can live wonderful and rich. People need to have more pursuit, to see the world, so-calle

node. JS Learning 01

() functionCause: The process module is a global module, FS is not a global module, and the global module can be used directlyNon-global modules require the Require () function to loadDetermine if the require () function is required to load1. Open the node document directly to see the appropriate function2. The left column of the document has the Globals module, which can be viewed directlyIn addition, in the above code, there are several output numb

Node. js learning notes

Node. js learning notes I will share with you the first article about NodeJS-common Javascript knowledge and how to transition from Javascript developers to NodeJS developers (I will not introduce specific frameworks ). Before reading this article, I hope you have some preliminary knowledge about javascript. Javascript is an interpreted language for prototype mod

[MongoDB Learning Note-02] Two ways node. JS connects MongoDB

combinations to connect multiple MongoDB servers. Example: mongodb://host1:270017, host2://270017, Host3:270017/testdb Port The port to use when connecting to the MongoDB server. The default value is 27017 Database The name of the database to connect to. Default to Admin Options The key-value pair for the option used when connecting. You can specify these options on the dbopt and serveropt parameters Here's an example of co

node. JS Learning (2)-routing features and form uploads

entry file:Inside the index file, we initialize an associative array to hold the functions that need to be used. and turn on the server.Server file:First, we set the encoded format of the received data to UTF-8, then register the listener for the "data" event to collect the new block of data received each time and assign it to the PostData variable, and finally, we move the call to the request route to the end event handler, To make sure it only fires when all data is received and fires only on

node. JS learning pathway (1)

node. js belongs to the background language, background language and Php,java, etc.Advantages: 1 Good performance node. js VS php 86 times times2. js with front table convenient3.node.js facilitates front-end learninghttps://nodejs.orgnode.

node. JS Learning Note (ii)--callback function

file Content if read success }); Console.log ("program execution ends!");To see how the results work:As you can see, because the asynchronous read operation is used, the script continues to execute the following code when the file is read, that is, the script goes down regardless of whether the file is read and output is complete. So you'll see that the Console.log is executed first ("------program execution is finished! ------") before you see the output" ****** this is my second demo! ". This

node. JS Learning Notes under Windows (3)---NPM

1. What is NPMNPM is the package Manager for node. JS, which allows developers to create, share, and reuse modules in node. JS applications. Before we installed node. JS through the Setup program on node's official website, NPM wa

node. JS Learning Note One

threads.ModuleFile and module one by one corresponding, a file is a module, exposed to a number of external module.exports, exposed to a exportsJS single-threaded and asynchronousSingle-threaded and asynchronous does not have to be a language feature at the same time. JS chose to become a single-threaded language, so it can not be asynchronous, but JS hosting environment (such as browser,

"JS Learning note" Dom Foundation-byte point, parent node

NodeType togetherAAAAAAAA text nodechildren--is very useful, it only includes element nodes but does not include text nodesAAAAAAAA text node(2) ParentNode, as long as the parent node is unchanged, is not changedExample: Click the link to hide the entire LiAAAAAAAA text node(3) offsetparent--and parentnode are different, it is to get the element used to locate t

node. JS Learning Note (i)

1. Callback functionNode is an asynchronous event-driven platform, so we often need to use callback functions in our code.Cases:1 setTimeout (function() {2 console.log (' callback is called '); 3 },2000);2. Standard callback functionThe callback function format in node. JS is conventional, it has two parameters, the first argument is err, the second argument is Data,err is the error message, and data is

node. JS learning process 2 (URL)

=scottcourse=node ',Pathname: '/course/list ',Path: '/course/list ',HREF: ' Http://imooc.com:8080/course/list?from=scottcourse=node#floor1 '}3, Url.format ({Protocol: ' http: ',/* Underlying protocol */slashes:true,/* whether there is a protocol for the double slash */Auth:null,Host: ' imooc.com:8080 ',/* domain or IP address */port:8080,/* Port number */Hostname: ' imooc.com ',Hash:floor1,Search: '? From=s

node. JS Learning First Day

//os.release (); View operating system version //os.type (); View operating system name //os.arch (); View operating system CPU Architecture console.log (result);Looking at the example above, try the version number of the Console.log output server operating system.Small expansion: module Description: Can be divided into the core module and file module, the core module is compiled into binary code, the reference is only a require notation, the file module refers t

node. JS Learning Notes

Node is:Built on top of JavaScript;Event-triggered and asynchronous;Designed for data-intensive real-time programming;Learning books: "Great node. js", "node. js"Event polling: Node reg

node. JS Learning Master

still far less than the web, also far less than directly write native code.2, (citation) the official said very obscure: learn once, Write anywhere. I didn't say run anywhere. In fact, judging Sliderios,switchios from the official API. Wait for these controls, and then there is bound to be sliderandroid,switchandroid ..., which is likely to require multiple sets of code to be written for different platforms.3, the development is not mature, currently many UI components only iOS implementation,

JS Learning Essay One: Object simple, deep cloning (copy)

an object to complete cloning (deep cloning).Complete object cloning is also called deep object cloning, deep cloning of objects, deep copying of objects, and so on. function clone(obj) { var o,i,J,K; if(typeof(obj)! ="Object" | | obj= = =null)return obj; if(obj instanceof(Array))

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