W3cubDocs

/JavaScript

SyntaxError

The SyntaxError object represents an error when trying to interpret syntactically invalid code. It is thrown when the JavaScript engine encounters tokens or token order that does not conform to the syntax of the language when parsing code.

Constructor

SyntaxError()
Creates a new SyntaxError object.

Instance properties

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.

Examples

Catching a SyntaxError

try {
  eval('hoo bar');
} catch (e) {
  console.error(e instanceof SyntaxError); 
  console.error(e.message);                
  console.error(e.name);                   
  console.error(e.fileName);               
  console.error(e.lineNumber);             
  console.error(e.columnNumber);           
  console.error(e.stack);                  
}

Creating a SyntaxError

try {
  throw new SyntaxError('Hello', 'someFile.js', 10);
} catch (e) {
  console.error(e instanceof SyntaxError); // true
  console.error(e.message);                // Hello
  console.error(e.name);                   // SyntaxError
  console.error(e.fileName);               // someFile.js
  console.error(e.lineNumber);             // 10
  console.error(e.columnNumber);           // 0
  console.error(e.stack);                  // @debugger eval code:3:9
}

Specifications

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
SyntaxError 1 12 1 5.5 5 1
SyntaxError() constructor 1 12 1 5.5 5 1
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
SyntaxError 1 18 4 10.1 1 1.0
SyntaxError() constructor 1 18 4 10.1 1 1.0
Server
Node.js
SyntaxError 0.1.100
SyntaxError() constructor 0.1.100

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SyntaxError