Converts GBP to USD and displays it
As of
// ==UserScript==
// @name Prolific Exchange Rates
// @namespace https://gist.github.com/Kadauchi
// @version 1.0.0
// @description Converts GBP to USD and displays it
// @author Kadauchi
// @icon http://i.imgur.com/oGRQwPN.png
// @include https://www.prolific.ac/studies*
// ==/UserScript==
function getExchangeRates() {
return new Promise(function (resolve, reject) {
const xhr = new XMLHttpRequest();
xhr.open(`GET`, `https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.xchange%20where%20pair%20in%20(%22GBPUSD%22)&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys`);
xhr.send(null);
xhr.onload = function () {
if (this.status === 200) resolve(this.response);
else reject(`${this.status} - ${this.statusText}`);
};
xhr.onerror = function () {
reject(`${this.status} - ${this.statusText}`);
};
xhr.ontimeout = function () {
reject(`${this.status} - ${this.statusText}`);
};
});
}
function parseExchangeRates (result) {
const response = JSON.parse(result);
const rate = response.query.results.rate.Rate;
setTimeout(displayUSD(rate), 500);
//displayUSD(rate);
}
function displayUSD (rate) {
for (let elem of document.querySelectorAll(`i.fa.fa-gbp`)) {
if (elem.nextSibling.nextSibling) {
const gbp = elem.nextSibling.nextSibling.outerHTML;
const gbpFormat = gbp.split(`>`)[1].replace(/[^0-9.]/g, '');
elem.nextSibling.nextSibling.insertAdjacentHTML(
`afterend`,
`<b style="color: green;"> $${(+rate * +gbpFormat).toFixed(2)}</b>`
);
}
else {
const gbp = elem.nextSibling.textContent;
const gbpFormat = gbp.split(`£`)[1].replace(/[^0-9.]/g, '');
console.log(gbpFormat);
elem.parentElement.insertAdjacentHTML(
`beforeend`,
`<b style="color: green;"> $${(+rate * +gbpFormat).toFixed(2)}</b>`
);
}
}
}
getExchangeRates()
.then(parseExchangeRates)
.catch(function (error) {
console.error(error);
});