object

Any instance of the Error object.

errorNumber

An integer representing an error.

An error number is a 32-bit value. The upper 16-bit word is the facility code, while the lower word is the actual error code.

The following example illustrates the use of the number property:

 	Copy Code
try x = y // Cause an error. catch(var e){ // Create local variable e. document.write(e) // Prints "[object Error]". document.write(e.number>>16 & 0x1FFF) // Prints 10, the facility code. document.write(e.number & 0xFFFF) // Prints 5009, the error code. document.write(e.description) // Prints "'y' is undefined". }

Version 5

Applies To: Error Object (JScript 5.6)

Reference