node.js - w3toppers.com

Find the version of an installed npm package

What is the –save option for npm install?

Update npm 5: As of npm 5.0.0, installed modules are added as a dependency by default, so the –save option is no longer needed. The other save options still exist and are listed in the documentation for npm install. Original answer: Before version 5, NPM simply installed a package under node_modules by default. When you … Read more

What’s the difference between tilde(~) and caret(^) in package.json?

See the NPM docs and semver docs: ~version “Approximately equivalent to version”, will update you to all future patch versions, without incrementing the minor version. ~1.2.3 will use releases from 1.2.3 to <1.3.0. ^version “Compatible with version”, will update you to all future minor/patch versions, without incrementing the major version. ^2.3.4 will use releases from … Read more

how to install cordova,Ionic installation on yosemite(mac)

As pointed out in this answer: Don’t worry it’s just warnings but not errors. The packages which you are installing require different minimal versions of node.js. But your version of node.js (0.12.0) is ok for them too

collection is not defined in mongodb

Here your not declared the variable(collection) so that only you got this error.You need to declare that variable with proper collection name. For Example : If you are going to find the records in users collection under test schema you need to the follow the below code. var express = require(‘express’); var router = express.Router(); … Read more

can i use symfony nodeJS and angular in one application [closed]

Yes, you can use Symfony flex managing with composer your back-end dependencies (pay attention that Symfony flex doesn’t come with Doctrine ORM by default so you need to require it in your composer.json file if you’re planning to use a database. If you want to integrate front-end frameworks in your symfony application you need to … Read more

How would I create a for-loop in Node.js

for(let j=0,l=10; j<l; j++){ console.log(j); } prints 0 1 2 3 4 5 6 7 8 9 but not 10

Unable to delete data from mongoDB

You need to pass the _id value as an ObjectID, not a string: var mongodb = require(‘mongodb’); router.delete(‘/contact/:id’, (req, res, next) => { contact.deleteOne({ _id: new mongodb.ObjectID(req.params._id) }, function(err, result) { if (err) { res.json(err); } else { res.json(result); } }); });

Unable to get output after passing functions in node js program? [closed]

Probably, you meant execute to be like this: function execute(someFunction, value) { someFunction(value); } As it is, your code just calls execute recursively, forever. (Well, until the stack overflows.) word is not reserved.

im new to making discord bots with node.js, i am having trouble with an error, it says that message is not defined in line 14 and 18

here,try this: client.on(‘message’, message =>{ if(message.content.startsWith(prefix) ||message.author.bot) return; const args = message.content.slice(prefix.lenght).split(/+/); const command = args.shift().toLowerCase(); if(command === ‘blackhumour’){ message.channel.send(‘What is the difference between a kid and a bowling ball? when you put your fingers in one it doesnt scream’); } else if(command === ‘sex’){ message.channel.send(‘no you fucking pervert’); } });