How can I validate with jquery if a field only has letters [closed]

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How can I validate with jquery if a field only has letters [closed]

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#1 by (5 votes)

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How can I validate a field that only has letters but with jquery? Thanks for your help.

javascript jquery

asked by Familia Valencia Hdz 03.01.2018 в 01:29

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1 answer

Use the same method to count one option at a time (Java, eclipse) Concatenate numerical values in an array using a hyphen

score 5 · Accepted Answer

It is done with regular expressions, it accepts letters and spaces:

function accionarLaCosaEsta(texto){
  document.getElementById("demo").innerHTML = '¿Son letras y espacios solamente? ' +  sonLetrasSolamente(texto);
}


function sonLetrasSolamente(texto){
  var regex = /^[a-zA-Z ]+$/;
  return regex.test(texto);
}

<input type="text" name="texto" onkeypress="accionarLaCosaEsta(this.value)"/>
<div id="demo"></div>

Here I add an example with JQuery

jQuery('#texto').on('keypress', function() {
  jQuery('#demo').html('¿Son letras y espacios solamente? ' + sonLetrasSolamente(this.value));
});

function sonLetrasSolamente(texto) {
  var regex = /^[a-zA-Z ]+$/;
  return regex.test(texto);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
Con JQuery:<br />
<input type="text" id="texto" />
<div id="demo"></div>