files/en-us/web/javascript/reference/global_objects/internalerror/index.md

metadata

title: InternalError
slug: Web/JavaScript/Reference/Global_Objects/InternalError
page-type: javascript-class
status:
  - non-standard
browser-compat: javascript.builtins.InternalError
sidebar: jsref

{{Non-standard_Header}}

The InternalError object indicates an error that occurred internally in the JavaScript engine.

Example cases are mostly when something is too large, e.g.:

• "too many switch cases",
• "too many parentheses in regular expression",
• "array initializer too large",
• "too much recursion".

InternalError is a subclass of {{jsxref("Error")}}.

Constructor

• {{jsxref("InternalError/InternalError", "InternalError()")}} {{non-standard_inline}}
  • : Creates a new InternalError object.

Instance properties

Also inherits instance properties from its parent {{jsxref("Error")}}.

These properties are defined on InternalError.prototype and shared by all InternalError instances.

• {{jsxref("Object/constructor", "InternalError.prototype.constructor")}}
  • : The constructor function that created the instance object. For InternalError instances, the initial value is the {{jsxref("InternalError/InternalError", "InternalError")}} constructor.
• {{jsxref("Error/name", "InternalError.prototype.name")}}
  • : Represents the name for the type of error. For InternalError.prototype.name, the initial value is "InternalError".

Instance methods

Inherits instance methods from its parent {{jsxref("Error")}}.

Examples

Too much recursion

This recursive function runs 10 times, as per the exit condition.

function loop(x) {
  // "x >= 10" is the exit condition
  if (x >= 10) return;

  // do stuff
  loop(x + 1); // the recursive call
}
loop(0);

Setting this condition to an extremely high value, may not work:

function loop(x) {
  if (x >= 1000000000000) return;

  // do stuff
  loop(x + 1);
}
loop(0);

// InternalError: too much recursion

For more information, see InternalError: too much recursion.

Specifications

Not part of any standard.

Browser compatibility

{{Compat}}

See also

• {{jsxref("Error")}}
• InternalError: too much recursion