SyntaxError() constructor

The SyntaxError constructor creates a new error object that represents an error when trying to interpret syntactically invalid 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

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