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  1. Tecnologa web para desarrolladores
  2. JavaScript
  3. Referencia de JavaScript
  4. Sentencias
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debugger

Baseline Widely available

This feature is well established and works across many devices and browser versions. Its been available across browsers since julio de 2015.

La sentencia debugger invoca cualquier funcionalidad de depuracin disponible, tiene la misma funcin que un breakpoint. Si la funcionalidad de depuracin no est disponible, esta sentencia no tiene efecto alguno.

In this article

Sintaxis

debugger;

Ejemplos

El siguiente ejemplo muestra un bloque de cdigo donde ha sido insertada una sentencia debugger, para invocar el depurador (si existe) cuando la funcin es ejecutada.

js
function codigoPotencialmenteDefectuoso() {
  debugger;
  // realizar paso a paso o examinar cdigo que contiene
  // potenciales errores
}

Cuando el depurador es invocado, la ejecucin se detiene en la sentencia debugger. Es como un punto de interrupcin en el script.

Paused at a debugger statement. [Paused at a debugger statement.]

Especificaciones

Specification
ECMAScript 2027 LanguageSpecification
# sec-debugger-statement

Compatibilidad con navegadores

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  1. JavaScript
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  4. Intermediate
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  13. Errors
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    54. SyntaxError: invalid regexp group
    55. SyntaxError: indicador de expresin regular no vlido "x"
    56. SyntaxError: invalid unicode escape in regular expression
    57. SyntaxError: JSON.parse: bad parsing
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    59. SyntaxError: missing : after property id
    60. SyntaxError: missing ) after argument list
    61. SyntaxError: missing ) after condition
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    63. SyntaxError: missing } after function body
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    101. TypeError: calling a builtin X constructor without new is forbidden
    102. TypeError: can't access/set private field or method: object is not the right class
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    104. TypeError: can't convert BigInt to number
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    106. TypeError: can't define property "x": "obj" is not extensible
    107. TypeError: can't delete non-configurable array element
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    112. TypeError: class constructors must be invoked with 'new'
    113. TypeError: cyclic object value
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    115. TypeError: getting private setter-only property
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    117. TypeError: invalid 'instanceof' operand 'x'
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    126. TypeError: setting getter-only property "x"
    127. TypeError: WeakSet key/WeakMap value 'x' must be an object or an unregistered symbol
    128. TypeError: X.prototype.y called on incompatible type
    129. URIError: malformed URI sequence
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    131. Warning: unreachable code after return statement
  14. Misc
    1. JavaScript technologies overview
    2. Execution model
    3. Lexical grammar
    4. Iteration protocols
    5. Strict mode
    6. Template literals
    7. Trailing commas
    8. Deprecated features
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