Error

The base Error object.

To implement a custom error class, extend the Error class and set the name property to the name of the custom error class:

class MyError extends Error {
    constructor(message) {
        super(message)
        this.name = 'MyError'
    }
}

Errors are usually thrown with the throw keyword:

throw new MyError('failed to do something')

To check for a specific error, use the instanceof operator:

try {
    throw new MyError('failed to do something')
} catch (e) {
    if (e instanceof MyError) {
        console.log('MyError caught')
    } else {
        throw e // re-throw all other errors
    }
}

Syntax

Error

Properties

• constructor
• prototype

Prototype Properties

• name
• message
• stack