What are the alternatives to callback hell in Node.js?

As a programmer, how do you make money outside work?

Tips on creating a Flexbox grid system?

I got asked this question in an interview: "how would you go about creating a flexbox based grid system". I'm curious on what the response should be, what are the nitty gritties one should know to create a flex based grid system?

What are some of best and worst takeaways after using NodeJS for a year?

If you find a developer software not supporting Markdown syntax, will it be a big deal for you?

These days most of the platforms, targeting programmers, are supporting Markdown syntax. What's your opinion on websites not supporting it? Will it be a big deal if it supports WYSIWYG like Medium editor instead of markdown editor?

Apart from captchas, what are the different ways to differentiate between a human and a spammy robot?

Old age captchas are good. Infact, Google's new "Click here to confirm you're not a robot" is an excellent option. Are there any other ways?

Apart from software development, what other hobbies do you have?

What should a software developer do in order to earn higher salary in the company?