Validation of whitespace on textboxs in jsp

Question

hi the following code help mi to validate if all my textboxes is blank anot but it doesnt help mi validate theres any white space or if the person just enter a space in the box
my form look smtg like this
<input type=textbox name="choice<%=i%>
so if i is =1 then it will look like the following
<input type=textbox name="choice1>
<input type=textbox name="choice1>
<input type=textbox name="choice1>
<input type=textbox name="choice1>
i will increase according and it varies and the number of textbok with the same name also varies.
The validation code to find blank textbos is written below but does any1 noe how to validate space?
can any1 help me add in the code as an example
var d=0;
for(var d=0;d< <%=i-1%>; d++){
var txtArray = eval("document.example.choices" + (d+1));
for (var h= 0; h < txtArray.length; h++) {
var val2 = txtArray[h].value;
if (val2 == ""){
alert("The choices"+" "+(h+1)+" "+"in question" +" "+(d+1)+" is not fill in."+" "+"Please fill in all the choices textboxes before submitting");
txtArray[h].focus();
return false; }
}

Answer 1

Hi i need help in this... its urgent
currently i just subscribe to a web hosting site and i need to start the private tomcat in the web server..
The followings are the instructions and i have follow them but i do not know how to create a web.xml file to store in the folder indicated for example a HelloServlet that im testing :
To setup servlet, you need to configure servlet into the file web.xml which needs to be placed in /var/www/html/WEB-INF directory.
www root directory or webapps:/var/www/htm
Classes directory located in: /var/www/html/WEB-INF/Classes/
There you will need to upload your Java class file.
Our default url-mapping for servlet is: /servlet/*
To check servlet in your browser: www.mydomain.net/servlet/HelloWorld
Jsp Files - Upload anywhere in /var/www/html
all the above steps are follow except the web.xml file which i suppose to write and store in the folder... but i actually try to write one but i still cannot load my servlet on the webpage... test on standalone tomcat works.
pls help its urgent!!!