node js log to file

{ console.log (' Create file succeeded! ') ); }});After execution, in the HTML folder there is another html.txt type of file, for the previous code can be repeated, because it can write and can create files.Then there is a question, since there are files, but the contents of how to write, or the same method, is more a parameter change, from the following code to reflect.// Introducing

.10jqka.com.cn', 'www .duokan.com ']; function fetchPage (url) {var start = new Date (); http. get ({host: url}, function (res) {console. log ("Got response from:" + url); console. log ("Request took:", new Date ()-start, "ms") ;}) ;}for (var I = 0; I Name it, node. jsWe run node.

node. JS is installed at the root directory provided at the time of installationNPM installed global package under User/user name/appdata/roaming/npm/node-modulesNPM installed local files at the command line root directoryThere are two ways to create a project in node1 via ExpressFirst install the Express framework:$ NPM install-g Express-generator　Create the pro

node. js Beginner, the process of synchronizing and asynchronously reading a document in a file:1, synchronous reading:var fs=require ("FS")Read the document directly and assign a value to the variable by synchronizing the return valuevar data=fs.readfilesync ("Input.txt");Console.log (Data.tostring ());2, asynchronous read:var fs=require ("FS");Returns the data

starting position of the file read, and if the value of position is NULL, it is read from the position of the current file pointer.Callback-callback function, there are three parameters err, Bytesread, Buffer,err is the error message, Bytesread represents the number of bytes read, and buffer is the cache object.7. Close the file:Fs.close (FD, callback)This callback finally has no parameter!!!8. Interceptio

As a node beginner, recently in a chat software, support registration, login, online single, multi-person chat, expression send, all kinds of file upload download, delete friends, chat record save, notify sound switch, background image switch, game and other functions, so used the Multer module, after various search documents, Do demo example, finally successfully achieve a single

node. JS provides an API for file operations, but does not have a direct copy of the file's associated operations. However, you can use the FS module to write a simple copy file program.varFS = require (' FS ');functionCopy (FILENAME,SRC) {fs.writefilesync (filename, fs.readfilesync (src)); //filename If it does not ex

node. js in FS moduleCommon featuresImplementing read- Write directory operations for files-Synchronous and asynchronous coexistence, asynchronous without synchronization-Fs.readfile cannot read a file that is larger than the running memory and will not use the ReadFile method if the file is too large-