valueOf
Summary
Returns the primitive value of the specified object.
Syntax
object.valueOf( )
Examples
The following example illustrates the use of the valueOf method with a date object.
var myDate = new Date();
myDate.setFullYear(2100, 5, 5);
if (myDate.getTime() == myDate.valueOf())
document.write("values are the same");
else
document.write("values are different");
// Output: values are the same
Remarks
The required object reference is any intrinsic JavaScript object.
The valueOf method is defined differently for each intrinsic JavaScript object.
| Object | Return Value |
|---|---|
| Array | Returns the array instance. |
| Boolean | The Boolean value. |
| Date | The stored time value in milliseconds since midnight, January 1, 1970 UTC. |
| Function | The function itself. |
| Number | The numeric value. |
| Object | The object itself. This is the default. |
| String | The string value. |
The Math and Error objects do not have a valueOf method.
See also
Other articles
Attributions
Microsoft Developer Network: Article