number Property
Returns or sets the numeric value associated with a specific error. The Error object's default property is number.
object.number [= errorNumber]
Arguments
- object
Any instance of the Error object. - errorNumber
An integer representing an error.
Remarks
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:
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".
}
Requirements
See Also
description Property | message Property | name Property
Applies To: Error Object