The CoinTools is a lightweight chrome extension that is made for Cryptocurrency fans. The CoinTools is fully open source at: https://github.com/DoctorLai/CoinTools
Install at Chrome Webstore
Chrome Webstore: https://chrome.google.com/webstore/detail/coin-tools/fmglcggbdcbkpkfapngjobfeakehpcgj
For Opera browsers, the workaround is to first install Chrome Extension Gadget. And similarly for Firefox, you can install Chrome Store Foxified before you install CoinTools.
Alt + Q Inline Cryptocurrency Query
Alt Q inline query to lookup any cryptocurrency pairs. Keyboard is always faster than mouse. If you just want to know the exchange rate between two pairs, you can Alt + Q to invoke the query dialog when you are at any web pages:
cryptocurrency-dialog
Press Enter and you should get the exchange rate immediately.
cryptocurrency-dialog-lookup
How to Implement The Inline Cryptocurrency Query in Chrome Extension using Javascript?
First, inject the script e.g. content.js in any webpages. This is to define the following in mainfest.json.
"content_scripts": [{
"matches": ["<all_urls>"],
"js":[
"js/jquery-3.2.1.min.js",
"js/content.js"
],
"run_at":"document_start"
}]
</all_urls>
Then, we need to listen to the keyboard (Alt + Q) and wait for the Promise to return from Cryptocompare API. The full Javascript source code (github) is as follows:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | 'use strict'; (function($) { // read as text const readResponseAsText = (response) => { return response.text(); } // read as json const readResponseAsJSON = (response) => { return response.json(); } // check if valid response const validateResponse = (response) => { if (!response.ok) { throw Error(response.statusText); } return response; } const __isNumeric = (n) => { return !isNaN(parseFloat(n)) && isFinite(n); } // getting conversion from cryptocompare const CoinToools_GetPriceCC = (a, b) => { a = a.toUpperCase(); if (a == 'SBD') { a = 'SBD*'; } b = b.toUpperCase(); if (b == 'SBD') { b = 'SBD*'; } let api = "https://min-api.cryptocompare.com/data/price?fsym=" + a + "&tsyms=" + b; return new Promise((resolve, reject) => { fetch(api, {mode: 'cors'}) .then(validateResponse) .then(readResponseAsJSON) .then(function(result) { if (result[b]) { resolve(result[b]); } else { reject("Error: " + a + ", " + b); } }).catch(function(error) { reject(error); }); }); } // Alt + Q $(document).keydown(function(e) { if (e && (e.key.toLowerCase() == "q") && e.altKey) { let s = prompt("(Cryptocompare) e.g. BTC STEEM, 10 BTC SBD, BTC 10 SBD", ""); if (s != null) { s = s.trim(); let arr = s.split(' '); if (arr.length == 2) { // BTC SBD CoinToools_GetPriceCC(arr[0], arr[1]).then((x) => { alert("1 " + arr[0].toUpperCase() + " = " + x + " " + arr[1].toUpperCase()); }).catch((error) => { alert(error); }); } else if (arr.length == 3) { // 2 BTC STEEM if (__isNumeric(arr[0])) { CoinToools_GetPriceCC(arr[1], arr[2]).then((x) => { alert(arr[0] + " " + arr[1].toUpperCase() + " = " + (x * arr[0]) + " " + arr[2].toUpperCase()); }).catch((error) => { alert(error); }); } else if (__isNumeric(arr[1])) { // SBD 3 STEEM CoinToools_GetPriceCC(arr[2], arr[0]).then((x) => { alert((arr[1] * x) + " " + arr[0].toUpperCase() + " = " + arr[1] + " " + arr[2].toUpperCase()); }).catch((error) => { alert(error); }); } } } } }); })(jQuery); |
'use strict';
(function($) {
// read as text
const readResponseAsText = (response) => {
return response.text();
}
// read as json
const readResponseAsJSON = (response) => {
return response.json();
}
// check if valid response
const validateResponse = (response) => {
if (!response.ok) {
throw Error(response.statusText);
}
return response;
}
const __isNumeric = (n) => {
return !isNaN(parseFloat(n)) && isFinite(n);
}
// getting conversion from cryptocompare
const CoinToools_GetPriceCC = (a, b) => {
a = a.toUpperCase();
if (a == 'SBD') {
a = 'SBD*';
}
b = b.toUpperCase();
if (b == 'SBD') {
b = 'SBD*';
}
let api = "https://min-api.cryptocompare.com/data/price?fsym=" + a + "&tsyms=" + b;
return new Promise((resolve, reject) => {
fetch(api, {mode: 'cors'})
.then(validateResponse)
.then(readResponseAsJSON)
.then(function(result) {
if (result[b]) {
resolve(result[b]);
} else {
reject("Error: " + a + ", " + b);
}
}).catch(function(error) {
reject(error);
});
});
}
// Alt + Q
$(document).keydown(function(e) {
if (e && (e.key.toLowerCase() == "q") && e.altKey) {
let s = prompt("(Cryptocompare) e.g. BTC STEEM, 10 BTC SBD, BTC 10 SBD", "");
if (s != null) {
s = s.trim();
let arr = s.split(' ');
if (arr.length == 2) { // BTC SBD
CoinToools_GetPriceCC(arr[0], arr[1]).then((x) => {
alert("1 " + arr[0].toUpperCase() + " = " + x + " " + arr[1].toUpperCase());
}).catch((error) => {
alert(error);
});
} else if (arr.length == 3) { // 2 BTC STEEM
if (__isNumeric(arr[0])) {
CoinToools_GetPriceCC(arr[1], arr[2]).then((x) => {
alert(arr[0] + " " + arr[1].toUpperCase() + " = " + (x * arr[0]) + " " + arr[2].toUpperCase());
}).catch((error) => {
alert(error);
});
} else if (__isNumeric(arr[1])) { // SBD 3 STEEM
CoinToools_GetPriceCC(arr[2], arr[0]).then((x) => {
alert((arr[1] * x) + " " + arr[0].toUpperCase() + " = " + arr[1] + " " + arr[2].toUpperCase());
}).catch((error) => {
alert(error);
});
}
}
}
}
});
})(jQuery);Support me and my work as a witness by
Some of my contributions: SteemIt Tools, Bots, APIs and Tutorial
–EOF (The Ultimate Computing & Technology Blog) —
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