Here's the scoop. I want a field to only allow the characters A-Za-z0-9. I also only one lower case text, so I am converting it on the fly as well. Here is what I have:
var alpha = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
function res(t,v){
var w = "";
for (i=0; i < t.value.length; i++) {
x = t.value.charAt(i);
if (v.indexOf(x,0) != -1)
w += x;
}
t.value = w;
t.value = t.value.toLowerCase();
}
and I call this function like this:
onkeyup="res(this,alpha);"
It works really well ... except (you knew there would be an "except") ..
it allows the extended character set. You can hold the alt key and enter a extended character set code and it will accept the entry. How can I also exclude the extended characters?
Code:
var alpha = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
function res(t,v){
var w = "";
for (i=0; i < t.value.length; i++) {
x = t.value.charAt(i);
if (v.indexOf(x,0) != -1)
w += x;
}
t.value = w;
t.value = t.value.toLowerCase();
}
and I call this function like this:
Code:
onkeyup="res(this,alpha);"
It works really well ... except (you knew there would be an "except") ..
it allows the extended character set. You can hold the alt key and enter a extended character set code and it will accept the entry. How can I also exclude the extended characters?
