Object-Oriented JavaScript - Third Edition

Error objects

Error objects are created either by the environment (the browser) or by your code:

    > var e = new Error('jaavcsritp is _not_ how you spell it'); 
    > typeof e; 
    "object" 

Other than the Error constructor, six additional ones exist and they all inherit Error:

• EvalError
• RangeError
• ReferenceError
• SyntaxError
• TypeError
• URIError

The Error.prototype members

Following are the Error.prototype members:

Property	Description
name	The name of the error constructor used to create the object: > var e = new EvalError('Oops'); > e.name; "EvalError"
message	Additional error information: > var e = new Error('Oops... again'); > e.message; "Oops... again"