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JavaScript Promises Explained By Gambling At A Casino

Kevin Kononenko on September 11, 2018

If you have ever gambled or watched a movie about gambling, then you can understand promises in JavaScript. We all love the asynchronous capabilit...
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Angel Daniel Munoz Gonzalez • Edited

Thank you for not using new Promise(); Multiple times, just once and then (badum tss) just chaining .then() that's how promises should be used.

I've seen so many tutorials around using/abusing new Promise(); when .then() already returns promises.

Edit:
I think I was not clear, bright explanation I really liked the reading and your example! keep writing more stuff!

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Kevin Kononenko

Haha I appreciate it Angel! Definitely clear.

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Tiodetac

I don’t think that there are the best online casinos that can be named like that. Gambling is pretty subjective so it mostly depends on what you like to play online. For example, if you ask 100 people who play online casino games, 55 of them will tell you that the nettcasinorsk.com/mrgreen/ with the most slots is the best one, while 30 will say a casino with the best live casino games is the best. The remaining 15 will likely say that as long as there’s a bonus they’re more than happy to dedicate time.

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Andrew Smith • Edited

Maybe your casino is good and pretty interesting but in my opinion it doesn't fit this forum. First of all your casino has some significant disadvantages, it looks like a blog, which makes it unattractive, it is on another language, so how could people understand how to play, and the games are totally different for our market. If you want to make a good product, you can have mega88a.com/id-ID/Home as the best example for our market. It is my favourite platform, because it fits my preferences and it offers me a lot of bonuses.

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okegaming • Edited

Maybe your casino is good and pretty interesting but in my opinion it doesn't fit this forum. First of all your casino has some significant disadvantages, it looks like a blog
okegaming

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DTorres

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Bett

looks not bad, but it's a more like a blog I think

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Arit Developer

This was an awesomely REFRESHING walkthrough! Now you've got me excited about Promises! Thank you so much for taking the time and effort to produce this intelligent, visually-appealing post! I shall take a page from your book as I start writing my own tutorials :D

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Kevin Kononenko

Thanks Arit :)

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Jenny Casino

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TomWhite1122

Good one! I'm running online casino sites.google.com/ so it was quite helpful for me.
How many years are you coding? Because I would never write a code like this by myself. Anyway thanks for the code and good explanation!

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grason777

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Rafael E.

at some point you stopped using slotResults and started using ticketValue but kept validating slotResults.

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kbk0125 profile image
Kevin Kononenko

Hey Rafael, can you point to a specific code block? I will check it out.

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Rafael E.

Sure!

All the code blocks after the paragraph named "Using Objects Within Promises"

withdraw.then(function(amount){
  let ticketValue = playSlots(amount, 100);

  if(slotResults <= 0) <---- HERE 
    throw err;

  return {tickets: ticketValue, cash: amount};
});

perhaps it should be something like

if((ticketValue + amount) <= 0)
    throw err;

or validate them separately in case you could use just tickets even if amount is <= 0.

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kbk0125 profile image
Kevin Kononenko

Good point! Just fixed two cases.

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okegaming

Maybe your casino is good and pretty interesting but in my opinion it doesn't fit this forum. First of all your casino has some significant disadvantages, it looks like a blog
okegaming

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worldforcrack

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John

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