Created
November 23, 2012 01:57
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Easy way to fetch stock quotes from Yahoo Finance using YQL
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AAPL: $<span class="stock-quote" data-value="AAPL"></span> | |
<br/> | |
MSFT: $<span class="stock-quote" data-value="MSFT"></span> | |
<br/> | |
GE: $<span class="stock-quote" data-value="GE"></span> |
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(function($) { | |
var getStockQuotesQuery = function(tickers) { | |
return "select * from yahoo.finance.quotes" + " where symbol IN ('" + tickers.join("', '") + "')"; | |
}; | |
var processStockQuotesResponse = function(response) { | |
var quotes = {}; | |
if (!$.isArray(response.query.results.quote)) response.query.results.quote = [response.query.results.quote]; | |
$.each(response.query.results.quote, function(index, quote) { | |
quotes[quote.symbol] = quote; | |
}); | |
return quotes; | |
}; | |
var getStockQuotes = function(tickers) { | |
var url = 'http://query.yahooapis.com/v1/public/yql'; | |
var d = $.Deferred(); | |
$.ajax({ | |
dataType: 'jsonp', | |
type: 'GET', | |
url: url, | |
data: { | |
q: getStockQuotesQuery(tickers), | |
env: 'store://datatables.org/alltableswithkeys', | |
format: 'json' | |
}, | |
success: function(response) { | |
var quotes = processStockQuotesResponse(response); | |
d.resolve(quotes); | |
}, | |
failure: function(response) { | |
d.reject(); | |
} | |
}); | |
return d; | |
} | |
window.getStockQuotes = getStockQuotes; | |
})(jQuery); | |
(function($) { | |
var stockSymbolsOnPage = function() { | |
var symbols = []; | |
$('.stock-quote').each(function() { | |
var value = $(this).data('value'); | |
var symbol = value.split('.')[0]; | |
symbols.push(symbol); | |
}); | |
return symbols; | |
}; | |
var stockQuotesOnPage = function() { | |
return getStockQuotes(stockSymbolsOnPage()); | |
}; | |
var updateStockQuoteForElement = function(element, quotes) { | |
var value = $(element).data('value'); | |
var symbol = value.split('.')[0]; | |
var property = value.split('.')[1] || 'AskRealtime'; | |
$(element).text(quotes[symbol][property]); | |
}; | |
var updateStockQuotesOnPage = function(quotes) { | |
console.log(quotes); | |
$('.stock-quote').each(function() { | |
updateStockQuoteForElement(this, quotes); | |
}); | |
}; | |
var refreshStockQuotesOnPage = function() { | |
$.when(stockQuotesOnPage()).then(function(quotes) { | |
updateStockQuotesOnPage(quotes); | |
}); | |
}; | |
window.refreshStockQuotesOnPage = refreshStockQuotesOnPage; | |
})(jQuery); | |
jQuery(function($) { | |
var refreshTimeInSeconds = 60; | |
setInterval(refreshStockQuotesOnPage, refreshTimeInSeconds * 1000); | |
refreshStockQuotesOnPage(); | |
}); |
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