node js error class

TitleEnvironment: Windows 8 64bit\node.js v0.10.33I think it is necessary to say that I have not installed node. JS in the default directory, but rather a custom pathE:\Program\nodejsI think a lot of the problems I came across were related to this.OK, and then I'm happy to open node, enter it under CMDNPM Install-g ExpressIt is sure to

Many node. JS programmers are accustomed to using:Throw "Error" throws an erroror callback (' error ') in the callback functionThis code works well in node. js, but it's pretty nonstandard code from the code.1. Unable to isomorphi

node. js Configure Error:no acceptable C compiler found! Please do sure you has a C compiler installed on your system and/or consider adjusting the CC environment variable If you installed it in a non-standard prefix.Check two points:1, whether you have C compiler tool is installed in your system, gcc as well;2, how to confirm that your system installed the C compiler tool

Today read Manuel Kiessling's "node get Started" has a general understanding of node. js, in the last example of this book, there are some problems when uploading picturesProblem: Problems caused by renaming files across directories (Fs.renamesync)Solution:1. Add a temporary pathvar New Formidable. Incomingform (); Form.uploaddir='tmp'// temporary path2. Using th

When node. js uses npm to install the plug-in, it prompts "install Error: ENOENT". How can this problem be solved? When you use npm install to install the extension, the system prompts "npm install Error: ENOENT, stat 'C: Users In the past, the installation process was smooth, but this was not the case. The solution

just want to do a grunt operation on a JS file, you do not need to create Index.js and Lib folder files, directly put the file in the root directory, and then the Gruntfile.js file in the path to change it.?Appendix 2:How to create a sample gruntfile. Installing GRUNT-CLI NPM install-g GRUNT-CLI ? Install the Windows version of Git. Create an empty folder. Navigate to the new fol

1 phenomenaThe node server encountered this error, as follows:events.js:71Throw arguments[1]; Unhandled ' ERROR ' event^Error:connect econnrefusedAt Errnoexception (net.js:770:11)At object.afterconnect [as OnComplete] (net.js:761:19)2 Reasons and methodsThis is mainly because the last node.

(this. Words) Console.log ( This = =pet) }}pet.speak ()This points to the global objectfunction Pet (words) { this. Words = words console.log (this. words) Console.log (this = = Global)}//This points to the global globally object Pet (' ... ')This points to the instance objectfunction Pet (words) { this]words = words thisfunction() { Console.log (this. words) Console.log (this) }} varNew Pet (' Miao ') cat.speak ();Using call and apply to change the c

Buffer(logo.png)The following code reads Logo.png as the buffer typeThen convert the buffer to a stringYou can configure a string:data:image/png;Base64,Buffer.toString()varFs= require(' FS ')FS.ReadFile(' Logo.png ',function(Err,Origin_buffer){ Console.Log(' origin_buffer If buffer format: '+Buffer.Isbuffer(Origin_buffer))//console.log (' Read to Origin_buffer: ' + origin_buffer) //Create file FS.WriteFile(' Log_buffer.png ',Origin_buffer,function(ERR){ if(ERR)Console.Log(ERR)})/

In node. js, we can use the formidable module to easily implement the file upload function, the code is as follows:varQ = require (' q '));varUtil = require (' util '));varFS = require (' FS ');varPath = require (' path ');varmoment = require (' moment '));varFormidable = require (' formidable '));varImageupload =function() {};imageupload.prototype.useformparsecallback=function(req) {varDeferred =Q.defer ()

After troubleshooting, this error is raised because there is a field name of "NodeName" in the table and should be caused by a conflict when the foreground XML parsing occurs. My workaround is to modify the column names and modify the mappings.As follows:[Column ("NodeName")]public string Name {get; set;}PS: Next to my idea, the foreground error place on the breakpoint, loop out (or F8), pay attention to ob

Plus () { SetTimeout (function() { console.log (' aaa ') },+) C +=1;} Plus () print ()AsynchronousEach task has multiple callback functions, and the previous task does not perform the next task, but instead executes the callback function, and the latter task executes in the order in which the task is sorted, not waiting for the previous task to complete// asynchronously executes the callback function after the task execution completes var c=0function print () { console.log

all listeners, you can pass event names as parameters//life.removealllisteners ()varHaschangelistener = Life.emit (' changeevent ', ' sister 1 ')//The listener was canceled .varHasputlistener = Life.emit (' clickevent ', ' Li Bai ')////Whether it is monitoredConsole.log (Haschangelistener) console.log (Hasputlistener)Number of listenersConsole.log (' changeevent: ' + life.listeners (' ChangeEvent '). Length) Console.log (' clickevent: ' + Life.listeners (' clickevent '). Length) Console.log ('

Recently the WIN8 system had 2503 errors when installing node. js and ArcGIS Software, and later discovered that it was Win8 's permission system. The solution may seem primitive, but it works:1) go to the C:\windows\installer path and locate the MSI for the installer. If your installation package does not extract the MSI files to this path, copy the corresponding MSI and CAB files to this path, such as the

Recently, the win8 system encountered a 2503 error when installing Node. js and ArcGIS software. Later, it was discovered that the Win8 permission system was at fault. The solution seems primitive, but it works very well: 1) Go to the C: \ windows \ installer path and find the msi of the installer. If your installation package does not extract the msi file to th

breakfast. Time to go to work! A function is created here. There are three parameters, and the third parameter is callback. This parameter must be a function.The haveBreakfast function records what it eats to the console and calls the callback function that is passed to it as a parameter. How to Use callback in Node. js Example of using the filesystem module in