JS Interview #35: What is faster, zero timeout or immediate resolve?
What鈥檚 the order of the output? . . . . . . . . . . . . . . . . . Both setTimeout and Promise.resolve are asynchronous actions, which means that the inner console....
How to disable ESLint for some lines, files or folders
ESLint - is a very convenient tool to control code quality. But, sometimes it鈥檚 necessary to disable it. In this tutorial, you鈥檒l learn how to turn off ESLint for certain directories and files....
4 ways to compare strings in JavaScript
In this short JS tutorial, you鈥檒l learn how to compare strings and see code examples. ...
JS Interview #34: Different ways to get current date in JavaScript
How do you prefer to get the current date in JS? What will be logged to the console? . . . . . . . . . . . ....
How to fix the error `require is not defined` in Node.js
Today I started writing a new project on Node.js and got this error on the very first run: const express = require('express'); ^ ReferenceError: require is not defined at ModuleJob.run (node:internal/modules/esm/module_job:152:23) at async Loader....
JS Interview #33: Add two empty arrays and check the type
Array? Object? Undefined? What鈥檚 the output? . . . . . . . . . . . . . . . . . . In JavaScript, the + operator doesn鈥檛 do the concatenation of arrays....
How to solve JavaScript tasks in a professional IDE with hints
To become a programmer, you need to code. And not on your smartphone or browser, but in a professional Interactive Development Environment (IDE). One of the best features of CoderslangJS - is practical tasks with automatic verification....
JS Interview #32: 0.1 + 0.1 + 0.1 === 0.3
What will be logged to the console? . . . . . . . . . . . . . . . . . . At a first glance, the answer is true as 0....
How to detect the user browser with JavaScript
You can check which browser the user is running using plain JavaScript. ...
JS Interview #31: Big or small
What鈥檚 the output? . . . . . . . . . . . . . . . . . . So, there鈥檚 an if statement and it鈥檚 condition Math.max() > 0 is all we need to analyze....