Recent questions tagged node.js

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node.js - Websocket transport reliability (Socket.io data loss during reconnection)

Used NodeJS, Socket.io Problem Imagine there are 2 users U1 & U2, connected to an app via Socket.io. ... https://github.com/Yaffle/EventSource. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Difference between `npm start` & `node app.js`, when starting app?

I have installed an application using the command express new 'filename'. I have just learned that you can start ... between the two? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - How to define object in array in Mongoose schema correctly with 2d geo index

I'm currently having problems in creating a schema for the document below. The response from the server always returns ... you can help me ;-) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - npm ERR! code UNABLE_TO_GET_ISSUER_CERT_LOCALLY

I am trying all the ways of creating react application. I have tried with maven and now i am trying with crate- ... //github.com/npm/npm/issues> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - `npm install` fails on node-gyp rebuild with `gyp: No Xcode or CLT version detected!`

Every time I try npm install. I get the following error. How do I fix it? gyp: No Xcode or CLT ... SKIPPING OPTIONAL DEPENDENCY: Exit status 1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Can't use NVM from root (or sudo)

I've mentioned that my application uses different version of NodeJS when running from sudo. $ node -v v0.10.23 $ ... sudo. What is my problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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467 views

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node.js - Try reinstalling `node-sass` on node 0.12?

I would like to use google web starter kit. I installed node.js v0.12.0, node-sass & gulp. And then ran: $ ... 't help. What should I do next? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Detect if called through require or directly by command line

How can I detect whether my Node.JS file was called using SH:node path-to-file or JS:require('path-to-file' ... it wasn't loaded with require? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - NPM cannot install dependencies - Attempt to unlock something which hasn't been locked

I've been trying to run an npm install on my package.json file, but I'm having a lot of trouble. It keeps ... to do with it too. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

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node.js hash string?

I have a string that I want to hash. What's the easiest way to generate the hash in node.js? The hash is for versioning, not security. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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393 views

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node.js - What is Express.js?

I am a learner in Node.js. What's Express.js? What's the purpose of it with Node.js? Why do we actually ... Redis? Does it come with Express.js? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Please point out the misfacts in my learning regarding Asynchronous Javascript

I am new to Javascript and Ascynchronous programming, and a few things confuse me, please point out the misfacts ... wrong, please elaborate it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - How to decipher string in node js which is encrypted in crypto js in javascript

My client side code: data.username = CryptoJS.AES.encrypt(user.username, "password"); data.password = CryptoJS.AES ... (crypto.js:365:12) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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615 views

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node.js - NPM installs dependencies in a wrong place

I just run a simple npm install morgan in a folder and for some reason it adds all the sub dependencies to the parent folder. See image attached See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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615 views

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node.js - nodemon install error "No valid versions available for timed-out"

I am getting this error when trying to install nodemon in a brand new node project. I've created a blank folder ... verbose exit [ 1, true ] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - node js - what happens to incoming events during callback excution

Suppose I have a callback with some heavy synchronous processing. During the execution, the event loop is not free ... they simply lost? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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602 views

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node.js - Send mail via Google Apps Gmail using service account domain wide delegation in nodejs

I've been reading tutorials and seeing examples for 2 days already, with no success. I want to send an email ... But still, the response is 400 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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805 views

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node.js - MongoDB on with Docker "failed to connect to server [localhost:27017] on first connect "

I am using mongoDB with and NodeJS backend. The Problem is I am getting the following error node:16) ... .0.1:27017]' } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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611 views

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node.js - Dialogflow easy way for authorization

Does exist an easy way to connect Dialogflow agent to node.js code? When I use this code with the ... without installing third party APIs. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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454 views

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node.js - Npm start issues in AngularJS phonecat application

I downloaded AngularJS phonecat application,and installed bower,http-server,karma,protractor globally. But when I move ... ? Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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863 views

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node.js - Call function inside mongodb's aggregate?

Collection: [ { _id: "Foo", flag1: false, flag2: true, flag3: false }, { _id: "Bar", flag1: true, ... says the tire is either OK or BROKEN. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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713 views

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node.js - imagemagick with nodejs not working

I am trying to resize an image with node-imagemagick library, but it is not working. the code i am using ... .onexit (child_process.js:674:10) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Angular4 can't find Jquery-UI functions

I have installed Jquery and Jquery-ui npm install --save jquery jquery-ui The files are in the node_modules ... where I am going wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Mongoose - caused by :: 11000 E11000 duplicate key error index?

Why do I get this duplicate error - Error creating new user: WriteError({"code":11000,"index":0,"errmsg":" ... "__v":0}}) any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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552 views

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node.js - Promise.all in JavaScript: How to get resolve value for all promises?

I wrote the following node.js file: var csv = require('csv-parser'); var fs = require('fs') var Promise ... the result of the relevant promise. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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643 views

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node.js - Print current stack trace in JavaScript

How do I print a stack trace from JavaScript? The answer How can I get a Javascript stack trace when I throw ... speaking, if it's different. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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479 views

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node.js - how to increase nodejs default memory?

On Server startup exporting 2GB(Approximately) data from mongodb to redis,then getting error as FATAL ERROR: ... fix this? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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668 views

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node.js - socket.io force a disconnect over XHR-polling

I have a client/server application using nodejs on the server and socket.io as the connection mechanism. For ... useful for my particular case. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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