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
js
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
messageOptional-
Human-readable description of the error.
optionsOptional-
An object that has the following properties:
causeOptional-
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.
fileNameOptional Non-standard-
The name of the file containing the code that caused the exception.
lineNumberOptional Non-standard-
The line number of the code that caused the exception.
Examples
Catching a URIError
js
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 a URIError
js
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® 2026 Language Specification # sec-nativeerror-constructors |