URIError() constructor

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The URIError() constructor creates URIError objects.

Syntax

new URIError()
new URIError(message)
new URIError(message, options)
new URIError(message, fileName)
new URIError(message, fileName, lineNumber)

URIError()
URIError(message)
URIError(message, options)
URIError(message, fileName)
URIError(message, fileName, lineNumber)

Note: URIError() can be called with or without new. Both create a new URIError instance.

Parameters

message Optional

Human-readable description of the error.

options Optional

An object that has the following properties:

cause Optional: A property indicating the specific cause of the error. When catching and re-throwing an error with a more-specific or useful error message, this property can be used to pass the original error.

fileName Optional Non-standard

The name of the file containing the code that caused the exception.

lineNumber Optional Non-standard

The line number of the code that caused the exception.

Examples

Catching an URIError

try {
  decodeURIComponent("%");
} catch (e) {
  console.log(e instanceof URIError); // true
  console.log(e.message); // "malformed URI sequence"
  console.log(e.name); // "URIError"
  console.log(e.stack); // Stack of the error
}

Creating an URIError

try {
  throw new URIError("Hello");
} catch (e) {
  console.log(e instanceof URIError); // true
  console.log(e.message); // "Hello"
  console.log(e.name); // "URIError"
  console.log(e.stack); // Stack of the error
}

Specifications

Specification
ECMAScript® 2025 Language Specification # sec-nativeerror-constructors