Posted By

derebus on 07/08/10

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Last Edited at 07/08/10 05:04am

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Maxlength para Textbox Multiline

/ Published in: JavaScript

Si deseamos especificar un maxlength en un textbox multiline podemos usar esta funcion en javascript, el cual botarÃ¡ un mensaje al exceder el maximo numero de caracteres.

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function ValidarCaracteres(textareaControl,maxlength)
    {                                                                             
        if (textareaControl.value.length > maxlength){
            textareaControl.value = textareaControl.value.substring(0,maxlength-1);
            alert("Debe ingresar hasta un maximo de "+maxlength+" caracteres");
        }
    }
 
//txtObservaciones.Attributes.Add("onkeypress", " ValidarCaracteres(this, 350);")
//txtObservaciones.Attributes.Add("onkeyup", " ValidarCaracteres(this, 350);")

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