RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://webplatform.github.io/docs/javascript/Error/number below:

number · WebPlatform Docs

number Summary

Returns or sets the numeric value associated with a specific error. The Error object’s default property is number.

Syntax

object .number [ =  errorNumber ]

Object: Any instance of the Error object.
errorNumber: An integer representing an error.

Examples

The following example causes an exception to be thrown and displays the error code that is derived from the error number.

try
     {
     
     var x = y;
     }
 catch(e)
     {
     document.write ("Error Code: ");
     document.write (e.number & 0xFFFF)
     document.write ("<br />");

     document.write ("Facility Code: ")
     document.write(e.number>>16 & 0x1FFF)
     document.write ("<br />");

     document.write ("Error Message: ")
     document.write (e.message)
     }

The output of this code is as follows.

Error Code: 5009
 Facility Code: 10
 Error Message: 'y' is undefined

Remarks

An error number is a 32-bit value. The upper 16-bit word is the facility code, and the lower word is the error code. To determine the error code, use the & (bitwise And) operator to combine the number property with the hexadecimal number 0xFFFF.