This JS class intends to provide a simple google spreadsheet reader.
Example:
<script src="GSpreadSheetReader.js"></script>
<script type="text/javascript">
function callBackSP (sp) {
//Get the cell number from the given tab.
var cell = sp.getCell(1,1);
document.getElementById("data").textContent = cell;
}
//Change the key id in the second parameter and the tab number "1".
var sp = new GSpreadSheetReader("test1","1IjTQPoTivCpeGkUrvmBBdUUZGOXv_FfzRfKW_BUD8kA", "1", callBackSP);
sp.loadScript();
</script>