I am attempting to modify CSS as part of a Node JS build process, but most of what I can find online refers to doing this in the DOM with Javascript. Is it possible to read a file in Node and access the equivalent of document.stylesheet or the cssRules property or is this a DOM-only… Read More Is it possible to access cssRules in Node JS

The node project I need to run requires certain environment variables. It runs on Windows, and it works fine when I try: set MY_ENV=abc & node . Is there an option in node.exe itself that can be used instead of this? Because there are cases where I can’t use the & symbol. I’m wondering if… Read More Does node.exe for Windows have an option to specify environment variables?

hello i got this problem . And i still not find out my issue. thanks you for helping me this is code of login.js var express = require(‘express’); var router = express.Router(); var db=require(‘../database’); /* GET users listing. */ router.get(‘/login’, function(req, res, next) { res.render(‘login’); }); router.post(‘/login’, function(req, res){ var username = req.body.username; var password… Read More Cannot read properties of undefined (reading 'username')

I have this function : static calculatePrice(offer) { if (typeof (offer.TakerGets || offer.taker_gets) == "string") offer.quality = 1 / offer.quality; return offer.quality / 1000000; } I don’t understand why the function modifies the value that I pass to it (this.book[currency][side][this.j[currency][side]]). It does not modify a copy but the original as if I had passed it… Read More Why the value I pass to a function behaves like a pointer?

console.log(parseInt("110000111010000011100101010001010101000100000000000000000001111", 2)); The output result was wrong, even it is in google browser console. The correct output is 7048259459772055567 I think the number is too big so nodejs cannot solve it? >Solution : Indeed, that number is much larger than Number.MAX_SAFE_INTEGER, so it cannot be accurately represented. You can use BigInts to work with numbers… Read More parseInt output wrong

The following code sets the row.already_messaged_clients absolutely fine and is accessible outside of the loop. businesses.forEach(async function(row) { // let already_messaged_clients_arr = await getAlreadyMessagedClientsForPlaceID(row.place_id); row.already_messaged_clients = 3; }); When I use an await like this: businesses.forEach(async function(row) { let already_messaged_clients_arr = await getAlreadyMessagedClientsForPlaceID(row.place_id); row.already_messaged_clients = 3; }); row.already_messaged_clients does not get set. Why is this?… Read More Using promises stops variable being set

A tool that I am using is displaying a room temperature on a smart mirror. This line of code is creating the temperature value: var temperatureTextWrapper = document.createTextNode( zone.state.sensorDataPoints.insideTemperature.celsius + "°" ); After this the var is just being appended to an existing span. By default, the value contains two decimal places eg. 25.76°C. However… Read More Display rounded number in a span in JS

I am trying to connect to a socket that DOES NOT exist for testing purposes. In such case, an exception is thrown and I expect it to be caught in the following try/catch block. createConnection is imported from the net package. try { createConnection(8000, "127.0.0.1") } catch(exception) { console.log("FAILED") } However, the try/catch fails and… Read More The try/catch block fails to catch socket connection exception

I have below couple of files of javascript: const { testFunc2 } = require("./TestFunction"); function home(val){ global.context={}; global.context.val = val; } home(3); testFunc2(); //homeFunction.js Below is TestFunction.js: exports.testFunc2=()=>{ console.log(context.val); } This code prints 3 as the output, even though I have not put global before context in testFunc2. How does this actually works? My guess… Read More global variable in Node.js: weird behaviour

Below is the code I would like to optimise. So, Question is that array in mention all value we need to check two value of sum is 8. If, yes, then we need to find this value of index. const arr = [1, 2, 3, 4, 5]; const sum = 8; console.log(arr); for (let i… Read More How to optimize the following Javascript code mention