| Spread.Sheets Documentation > Formula Reference > Formula Functions > REFRESH |
This function recalculates the formula reference.
REFRESH(formula, evaluateMode, interval)
This function has these arguments:
| Argument | Description |
|---|---|
| formula | A reference to the formula to evaluate. This argument is required. |
| evaluateMode | The GC.Spread.CalcEngine.Functions.AsyncFunctionEvaluateMode type. This argument is required. |
| interval | The interval in milliseconds. The evaluateMode option must be set to interval to use this option. |
Use REFRESH when you want to control how formulas recalculate.
sheet.setFormula(2, 2, "=Refresh(now(), 2, 1000)");
sheet.setFormula(3, 2, "=REFRESH(GETTIMEFROMSERVER(),1)");
This example uses the REFRESH formula.
| JavaScript |
Copy Code
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|---|---|
<!DOCTYPE html>
<html>
<head>
<title>Spread.Sheets</title>
<link href="./css/gc.spread.sheets.10.x.x.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="./scripts/gc.spread.sheets.all.10.x.x.min.js"></script>
<!--jQuery References-->
<script src="http://code.jquery.com/jquery-2.0.2.js" type="text/javascript"></script>
<script type="text/javascript">
window.onload = function(){
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
var sheet = spread.getActiveSheet();
var GetNumberFromServer = function () {
}
GetNumberFromServer.prototype = new GC.Spread.CalcEngine.Functions.AsyncFunction("GETNUMBERFROMSERVER", 2, 2);
GetNumberFromServer.prototype.evaluate = function (context, arg1, arg2) {
var self = this;
$.get('http://xa-tools-shdev/asyncfunction/api/values/' + (arg1 || 1), function (value) {
context.setAsyncResult(value);
});
}
GC.Spread.CalcEngine.Functions.defineGlobalCustomFunction("GETNUMBERFROMSERVER", new GetNumberFromServer());
sheet.setValue(0, 0, 'ChangeValue');
sheet.setValue(0, 1, 'Formula');
sheet.setValue(0, 2, 'Result');
sheet.setValue(0, 3, 'Comments');
sheet.setValue(1, 3, 'On A2 changed');
sheet.setValue(2, 3, 'On A2 changed');
sheet.setValue(3, 3, 'Evaluate once');
sheet.setValue(4, 3, 'Every 2 seconds');
sheet.setValue(1, 0, 1);
sheet.setValue(1, 1, '=GetNumberFromServer(A2)');
sheet.setValue(2, 1, '=Refresh(GetNumberFromServer(A2), 0)');
sheet.setValue(3, 1, '=Refresh(GetNumberFromServer(A2), 1)');
sheet.setValue(4, 1, '=Refresh(GetNumberFromServer(A2), 2, 2000)');
sheet.setFormula(1, 2, '=GetNumberFromServer(A2)');
sheet.setFormula(2, 2, '=Refresh(GetNumberFromServer(A2), 0)');
sheet.setFormula(3, 2, '=Refresh(GetNumberFromServer(A2), 1)');
sheet.setFormula(4, 2, '=Refresh(GetNumberFromServer(A2), 2, 2000)');
sheet.setColumnWidth(0, 100);
sheet.setColumnWidth(1, 300);
sheet.setColumnWidth(2, 200);
sheet.setColumnWidth(3, 200);
sheet.setValue(7, 1, "=Refresh(now(), 2, 1000)");
sheet.setValue(7, 3, "Every 1 seconds");
sheet.setFormula(7, 2, "=Refresh(now(), 2, 1000)");
var GetTimeFromServer = function () {
}
GetTimeFromServer.prototype = new GC.Spread.CalcEngine.Functions.AsyncFunction("GETTIMEFROMSERVER", 2, 2);
GetTimeFromServer.prototype.evaluate = function (context) {
$.get('http://xa-tools-shdev/asyncfunction/api/time/', function (value) {
context.setAsyncResult(value);
});
}
GetTimeFromServer.prototype.evaluateMode = function () {
return 2;
};
GetTimeFromServer.prototype.interval = function () {
return 1000;
};
GC.Spread.CalcEngine.Functions.defineGlobalCustomFunction("GETTIMEFROMSERVER", new GetTimeFromServer());
sheet.setValue(10, 1, "=GetTimeFromServer()");
sheet.setValue(10, 3, "Every 1 seconds");
sheet.setFormula(10, 2, "=GetTimeFromServer()");
sheet.getCell(10, 2).hAlign(GC.Spread.Sheets.HorizontalAlign.right);
}
</script>
</head>
<body>
<div id="ss" style="width:100%;height:500px;border:1px solid gray"></div>
</body>
</html>
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