contains valid characters

A-Za-z0-9 and space

[WhosAWhata]

If I have a text field <form name="myform"><input type="text" name="mytext">

how can i have <input type="submit" value="submit" onclick="validate()"> where validate is a function that will make sure document.myform.mytext.value contains only letters (upper and lower case), numbers, and spaces and return false if not?
in php
<?
function validate($text){
if(ereg("^[A-Za-z0-9 ]+$",$text)) {
return true;
}else {
return false;
}
}
?>

i think i got that syntax right...thanks

[Bernard Marx]

What the question, WhosAWhata? I think this will help:

<input type="submit" value="submit" onclick="validate([blue]this.form.mytext.value[/blue])">

then

function validate(value){
if(/^[A-Za-z0-9 ]+$/.test(value)) { 
return true; 
}else { 
return false; 
} 
}

The real suggestion I'm making is to send the textarea's value with the

[blue]validate()[/blue]

call.
I'm assuming that your regexp is correct. I'm fairly sure that the form I've turned it into will be OK, and save a function call

[blue]ereg[/blue]

inside.

[WhosAWhata]

<input type="submit" value="submit" onclick="validate(this.form.mytext.value);validate(this.form.mytext2.value)">

will this work?