JavaScript ErrorsError

SyntaxError: Identifier has already been declared

errorCodes.js-syntaxerror-identifier-already-declared.name

errorCodes.js-syntaxerror-identifier-already-declared.description

browsernode

What causes this error

errorCodes.js-syntaxerror-identifier-already-declared.cause

How to fix it

errorCodes.js-syntaxerror-identifier-already-declared.fix

Example

let x = 1; let x = 2; // SyntaxError

Official Documentation

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errorCodes.js-typeerror.name

errorCodes.js-typeerror.description

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TypeError: x is not iterable

errorCodes.js-typeerror-not-iterable.name

errorCodes.js-typeerror-not-iterable.description

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ReferenceError

errorCodes.js-referenceerror.name

errorCodes.js-referenceerror.description

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errorCodes.js-econnrefused.name

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ERR_ASYNC_CALLBACK

errorCodes.js-err-async-callback.name

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ERR_SOCKET_BAD_PORT

errorCodes.js-err-socket-bad-port.name

errorCodes.js-err-socket-bad-port.description