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serialk89 on 08/31/12

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Last Edited at 08/31/12 03:45am

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Comprobar cadena en input con Javascript

/ Published in: JavaScript

Comprueba la existencia de una cadena de texto en un input con javascript. (LA impresion del input estÃ¡ en CAKEPHP)

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<!-- PHP O HTML -->
echo $form->input('email', array('label' => 'Email', 'placeholder' => 'Email', 'onkeyup' => 'validar(this.id)'));
 
//JAVASCRIPT
function validar(idcampo) {
            var cadena = document.getElementById(idcampo).value;
            var exp_reg  = /yopmail/i; // expresiÃ³n regular para letras(mÃ¡y o minus), acentuadas o no,
            var verifica = exp_reg.test(cadena);
            if (verifica == true){
                document.getElementById(idcampo).value = "";
            }
        }

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