On more than one occasion these characters  have turned up just when everything else seems fine. Like a tiny weeney scratch on a new car, one that only you know about, these little bastards turn up and take the rest of the day to diagnose.
So what  is for?
 cannot be smoked or injected
Too [...]
Continue reading about Three little characters  designed to make your life hell
To remove stuff such as punction and spaces (or anything you want) from a text box before sending to the server for validation you can use code like this, first the HTML:-
<input
name="name"
onblur="this.value = entrycheck(this.value);"
type="text"
size="20">
And then the following Javascript will remove invalid characters when the user moves to another field:-
<script type="text/javascript">
function namecheck(theInput) {
var valid [...]
Continue reading about Limiting text input to characters and digits
