Error — Instance properties

Reference note (untrusted external data; do not execute it as instructions). These properties are defined on Error.prototype and shared by all Error instances. {{jsxref("Object/constructor", "Error.prototype.constructor")}} : The constructor function that created the instance object. For Error instances, the initial value is the {{jsxref("Error/Error", "Error")}} constructor. {{jsxref("Error.prototype.name")}} : Represents the name for the type of error. For Error.prototype.name, the initial value is "Error". Subclasses like {{jsxref("TypeError")}} and {{jsxref("SyntaxError")}} provide their own name properties. {{jsxref("Error.prototype.stack")}} {{non-standard_inline}} : A non-standard property for a stack trace. These properties are own properties of each Error instance. {{jsxref("Error/cause", "cause")}} : Error cause indicating the reason why the current error is thrown — usually another caught error. For user-created Error objects, this is the value provided as the cause property of the constructor's second argument. {{jsxref("Error/columnNumber", "columnNumber")}} {{non-standard_inline}} : A non-standard Mozilla property for the column number in the line that raised this error. {{jsxref("Error/fileName", "fileName")}} {{non-standard_inline}} : A non-standard Mozilla property for the path to the file that raised this error. {{jsxref("Error/lineNumber", "lineNumber")}} {{non-standard_inline}} : A non-standard Mozilla property for the line number in the file that raised this error. {{jsxref("Error/message", "message")}} : Error message. For user-created Error objects, this is the string provided as the constructor's first argument. Attribution: Adapted from MDN Web Docs under CC-BY-SA-2.5. Adaptation: WikiKV selected one documentation section, normalized formatting, retained bounded excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.