Cryptocurrency Price Tracker - My Simple Chrome Extension for Tracking Price Changes of Cryptocurrencies
Hi,
Cryptocurrency Price Tracker is small extension that I have created to track coins that I am interested for. After month of using it, I decided to publish it on Chrome store.
When you install extension, by default you would see Bitcoin. If you want to add more coins you can right click on extension and choose options. There you would need to wait few moments while all available coins are downloaded. You can than check or uncheck coins and use input field to filter them, so you can easily find coin that you are looking for. There you can also choose in what currency coin value will be displayed. Dollar is default currency.
Please note that whenever you make some change in options page, you would need to wait 5 minutes for that changes to take effect in a popup window. Why? If you take a look at coinmarketcap.com API you will see that results are updated every 5 minutes, so there is no point to request their API whenever you click on extension icon. They also tell people that limit number of request to no more than 10 per one minute. But because results are updated every 5 minutes, I limited number of request to 5 for popup window and 10 minutes for options page. I think that everyone who are using their API should do the same. Because if we ,,bomb" them with huge number of requests, their API will run very slow.
Between two updates extension will use HTML from the last update. That HTML is saved into chrome storage.
Also, at the bottom of popup window, you can see progress bar. That bar indicates how much time is left until next update.
Extension uses coinmarketcap.com API to display coins information.
So if you are interested to try this extension, you can download it here!
I hope that someone will find it useful.
Best regards!
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