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.

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

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 compatibility

See also

• Error
• Venkat.R - Various Syntax Error for var variables
• Venkat.R - Various Syntax Error for let variables
• Venkat.R - Various Syntax Error for const variables