VarType
VarType(variable)
Description
VarType returns an integer that indicates the type of a variable. The required parameter, variable, is any variable that doesn't contain a user-defined type.
When variable is an array, the value returned is equal to the array constant plus the constant that specifies the element-type.
Table 25: VarType return values
| Constant | Value | Description |
|---|---|---|
| vbEmpty | 0 | Empty |
| vbNull | 1 | Null |
| vbInteger | 2 | Integer |
| vbLong | 3 | Long |
| vbSingle | 4 | Single-precision floating-point |
| vbDouble | 5 | Double-precision floating-point |
| vbCurrency | 6 | Currency |
| vbDate | 7 | Date |
| vbString | 8 | String |
| vbObject | 9 | Object |
| vbError | 10 | Error |
| vbBoolean | 11 | Boolean |
| vbVariant | 12 | Variant |
| vbDataObject | 13 | Data-access Object |
| vbByte | 17 | Byte |
| vbArray | 8192 | Array |
Example (Basic)
Rem VarType Example 'VarType returns variable type as an integer Dim nInteger, nSingle nInteger = CInt(44) Print 44 & " is VarType " & VarType(nInteger) nSingle = CSNG(99.44) Print 99.44 & "isVarType" & VarType(nSingle)
Example (JavsScript)
// VarType Example
/* VarType returns variable type as an integer */
function VarType(o) {
var varTypes= {
'undefined' : 0,
'[object null]' : 1,
'number' : 2,
'[object Date]' : 7,
'string' : 8,
'[object Error]' : 10,
'boolean' : 11,
'[object Array]' : 8192
},
TOSTRING = Object.prototype.toString;
if (varTypes[typeof o] || varTypes[TOSTRING.call(o)] || (o ? 'object' : 'null')==2) {
if (o.toString().indexOf('.')>-1) { return 5; } //JavaScript only deals with doubles, not singles
}
if (o==null) { return 1; }
return varTypes[typeof o] || varTypes[TOSTRING.call(o)] || (o ? 'object' : 'null');
}
var nInteger, nSingle;
nInteger = parseInt(44);
NSB.Print nInteger.toString() + " is VarType " + VarType(nInteger);
nSingle = parseFloat(99.44);
NSB.Print nSingle.toString() + " is VarType " + VarType(nSingle);
Output
44 is VarType 2 99.44 is VarType 4