Check first character of a form field is a letter

Question

I need to be able to check if the first entry in a form field is a character. Something similar to below (but with the 'magic' replacing 'somethinginhere'. Thanks in advance

<script type="text/javaScript">
function Validator() {
    if (document.theForm.Code.value!= "<somethinginhere>") {
        alert("Code needs to start with a letter");
    }
}
</script>

You have something similar [here][1] [1]: http://stackoverflow.com/questions/9862761/how-to-check-if-character-is-a-letter-in-javascript — Zivko, Sep 29 '14 at 11:49

score 1 · Answer 1 · edited Sep 29 '14 at 12:56

1

You can use a Regular Expression like this:

function Validator(astring) {
  return  /^[a-zA-Z]/.test(astring);
}

edited Sep 29 '14 at 12:56

Fran Verona

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answered Sep 29 '14 at 12:19

Fabio

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score 0 · Answer 2 · answered Sep 29 '14 at 12:01

    <script type="text/javaScript">
    function Validator() {
    var letters = '/^[A-Za-z]+$/'; 
    var element=document.getElementById("myText").innerHTML;

    if (!element.match(letters)) {
        alert("Code needs to start with a letter");
    }
}
    </script>

Check first character of a form field is a letter

2 Answers2