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The SyntaxError object represents an error when trying to interpret syntactically invalid code.

Description

A SyntaxError is thrown when the JavaScript engine encounters tokens or token order that does not conform to the syntax of the language when parsing code.

Syntax

new SyntaxError([message[, fileName[, lineNumber]]])

Parameters

message Optional
Human-readable description of the error
fileName Optional
The name of the file containing the code that caused the exception
lineNumber Optional
The line number of the code that caused the exception

Properties

SyntaxError.prototype
Allows the addition of properties to a SyntaxError object.

Methods

The global SyntaxError contains no methods of its own, however, it does inherit some methods through the prototype chain.

SyntaxError instances

Properties

SyntaxError.prototype.constructor
Specifies the function that created an instance's prototype.
SyntaxError.prototype.message
Error message. Although ECMA-262 specifies that SyntaxError should provide its own message property, in SpiderMonkey, it inherits Error.prototype.message.
SyntaxError.prototype.name
Error name. Inherited from Error.
SyntaxError.prototype.fileName
Path to file that raised this error. Inherited from Error.
SyntaxError.prototype.lineNumber
Line number in file that raised this error. Inherited from Error.
SyntaxError.prototype.columnNumber
Column number in line that raised this error. Inherited from Error.
SyntaxError.prototype.stack
Stack trace. Inherited from Error.

Methods

Although the SyntaxError prototype object does not contain any methods of its own, SyntaxError instances do inherit some methods through the prototype chain.

Examples

Catching a SyntaxError

try {
  eval('hoo bar');
} catch (e) {
  console.log(e instanceof SyntaxError); // true
  console.log(e.message);                // "missing ; before statement"
  console.log(e.name);                   // "SyntaxError"
  console.log(e.fileName);               // "Scratchpad/1"
  console.log(e.lineNumber);             // 1
  console.log(e.columnNumber);           // 4
  console.log(e.stack);                  // "@Scratchpad/1:2:3\n"
}

Creating a SyntaxError

try {
  throw new SyntaxError('Hello', 'someFile.js', 10);
} catch (e) {
  console.log(e instanceof SyntaxError); // true
  console.log(e.message);                // "Hello"
  console.log(e.name);                   // "SyntaxError"
  console.log(e.fileName);               // "someFile.js"
  console.log(e.lineNumber);             // 10
  console.log(e.columnNumber);           // 0
  console.log(e.stack);                  // "@Scratchpad/2:11:9\n"
}

Specifications

Specification Status Comment
ECMAScript 3rd Edition (ECMA-262) Standard Initial definition.
ECMAScript 5.1 (ECMA-262)
The definition of 'SyntaxError' in that specification.
Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'SyntaxError' in that specification.
Standard  
ECMAScript Latest Draft (ECMA-262)
The definition of 'SyntaxError' in that specification.
Draft  

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic supportChrome Full support YesEdge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yesnodejs Full support Yes

Legend

Full support  
Full support

See also

Document Tags and Contributors

Last updated by: urty5656,