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HTML5 Chilean RUT Validator
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| <!doctype html> | |
| <html lang="es"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Validador de RUT HTML5</title> | |
| </head> | |
| <body> | |
| <form> | |
| <input type="text" id="rut" name="rut" required oninput="checkRut(this)" placeholder="Ingrese RUT"> | |
| <button type="submit">Validar RUT y Enviar Form</button> | |
| <script src="validarRUT.js"></script> | |
| </form> | |
| </body> | |
| </html> |
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| function checkRut(rut) { | |
| // Despejar Puntos | |
| var valor = rut.value.replace('.',''); | |
| // Despejar Guión | |
| valor = valor.replace('-',''); | |
| // Aislar Cuerpo y Dígito Verificador | |
| cuerpo = valor.slice(0,-1); | |
| dv = valor.slice(-1).toUpperCase(); | |
| // Formatear RUN | |
| rut.value = cuerpo + '-'+ dv | |
| // Si no cumple con el mínimo ej. (n.nnn.nnn) | |
| if(cuerpo.length < 7) { rut.setCustomValidity("RUT Incompleto"); return false;} | |
| // Calcular Dígito Verificador | |
| suma = 0; | |
| multiplo = 2; | |
| // Para cada dígito del Cuerpo | |
| for(i=1;i<=cuerpo.length;i++) { | |
| // Obtener su Producto con el Múltiplo Correspondiente | |
| index = multiplo * valor.charAt(cuerpo.length - i); | |
| // Sumar al Contador General | |
| suma = suma + index; | |
| // Consolidar Múltiplo dentro del rango [2,7] | |
| if(multiplo < 7) { multiplo = multiplo + 1; } else { multiplo = 2; } | |
| } | |
| // Calcular Dígito Verificador en base al Módulo 11 | |
| dvEsperado = 11 - (suma % 11); | |
| // Casos Especiales (0 y K) | |
| dv = (dv == 'K')?10:dv; | |
| dv = (dv == 0)?11:dv; | |
| // Validar que el Cuerpo coincide con su Dígito Verificador | |
| if(dvEsperado != dv) { rut.setCustomValidity("RUT Inválido"); return false; } | |
| // Si todo sale bien, eliminar errores (decretar que es válido) | |
| rut.setCustomValidity(''); | |
| } |
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