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  1. Tecnologa web para desarrolladores
  2. JavaScript
  3. Referencia de JavaScript
  4. Expresiones y operadores
  5. void
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void

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.

Resumen

El operador void se usa en cualquiera de los siguientes modos:

  1. void (expresion )
  2. void expresion

El operador void especifica una expresin que se evala sin devolver un valor. expresion es una expresin JavaScript para evaluar. El parntesis rodeando la expresin es opcional, pero usarlos es una buena prctica al programar.

Puede usar el operador void para especificar una expresin como un enlace de hipertexto. La expresin se evala pero no se carga en lugar del documento actual.

El siguiente cdigo crea un enlace de hipertexto que no hace nada cuando el usuario hace click en l. Cuando el usuario hace click en el enlace, void(0) se evala como 0, pero eso no tiene ningn efecto en JavaScript.

html
<a href="javascript:void(0)">Haga click aqu para no hacer nada</a>

El siguiente cdigo crea un enlace de hipertexto que enva un formulario cuando el usuario hace click en l.

html
<a href="javascript:void(document.forms["miFormulario"].submit())">
Haga click aqu para enviar</a>

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    55. SyntaxError: indicador de expresin regular no vlido "x"
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  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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