message Property (Error) (JavaScript)


Returns an error message string.



Required. Instance of Error object.

The message property returns a string that contains an error message associated with a specific error.

The description and message properties provide the same functionality. The description property provides backwards compatibility; the message property complies with the ECMA standard.


The following example causes a TypeError exception to be thrown and displays the name of the error and its message.

    // Cause an error.
    var x = y;
    document.write ("Error Message: " + e.message);
    document.write ("<br />");
    document.write ("Error Code: ");
    document.write (e.number & 0xFFFF)
    document.write ("<br />");
    document.write ("Error Name: " +;


The output of this code is as follows.

Error Message: 'y' is undefined
Error Code: 5009
Error Name: TypeError


Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported in Store apps (Windows 8 and Windows Phone 8.1). See Version Information.

Applies To: Error Object (JavaScript)