Question

i am making a textfield in which the user will enter only alphanumeric password.i want to validate it through javascript but it is not validating.

<script>
function valid()
{

var flag;
var alphaExp=/^[0-9a-zA-Z]+$/;
if(!(myform.uname.value.match(alphaExp)))
{
 alert("Username must contain Alphabet and Number Both");
 myform.user.focus();
 return false;
}

}

</script>

here myform is the name of form and uname is the name of textfield

can anyone tell me what could be the reason?

Answer 1

If I understand correctly, you want to make the use letters and numebrs in their password.

var alphaExp=/([a-z].*[0-9])|([0-9].*[a-z])/i;

should work for that.