Convertir a mayúscula tras abandonar el input
Podría darse el caso de que queremos que los usuarios que se registren en nuestras Web se guarden sus nombres en la base de datos en mayúsculas o minúsculas.
En este artículo vamos mostrar una forma de pasar a mayúsculas los datos introducidos al abandonar el input.
Este efecto lo podemos lograr con el evento onblur de HTML de la siguiente forma:
<input type="text" id="fname" onblur="upperCase()">
En este caso, lo que hace el efecto onblur es llamar a la función upperCase() que tenemos previamente declarada dentro de la etiqueta <head>. La función se encarga de pasar a mayúsculas el contenido depositado en el input.
<script type="text/javascript">
function upperCase() {
var x=document.getElementById("fname").value
document.getElementById("fname").value=x.toUpperCase()
}
</script>
En esta función lo que estamos haciendo es recoger el valor del input con id=»fname» y cambiar su valor a mayúsculas con la función toUpperCase() de javascript.
Autor
Escrito por Jose Aguilar - Director ejecutivo y tecnológico en JA Modules. Experto programador PrestaShop y Experto programador WordPress.
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