jQuery deshabilitar todo el formulario de entrada
//In older versions you could use attr.
//As of jQuery 1.6 you should use prop instead:
$("#target :input").prop("disabled", true);
//To disable all form elements inside 'target'. See :input:
//Matches all input, textarea, select and button elements.
//If you only want the <input> elements:
$("#target input").prop("disabled", true);
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