How avoid spl charecters in jsp forms using java script..

Question

hi,
iam using following function for escaping spl charcetrs..
function checkEscapeCharacter(currentField) {
var string = currentField.value;
var iChars = "\"*|,?_:<>[]{}';()@&$#%!~`^-+=\\/";
for (var i = 0; i < string.length; i++) {
if (iChars.indexOf(string.charAt(i)) != -1){
alert("illegal");
currentField.value="";
currentField.focus();
return false;
but with code aftet alert iam removing alll entered value..i just want to remove the illegal chacters..iam calling this onkeyup event..after alert it should remove spl char from string and assign it back to text fileld.
regard,

Answer 1

Hello,
I wrote the following two methods, you pass the first of these the String
you want to check, and the character you want removed. It then returnes the
'cleaned' string.
The second is very similar, but instead of removing the character, it replaces
it with another.
These only do one character at a time though, which is not exactly what your
after.
   public String stripChar(String string, String charToStrip)
        String newString="";
        StringTokenizer st = new StringTokenizer(string, charToStrip);
        while (st.hasMoreTokens())
            newString = newString + st.nextToken();
        return newString;
public String replaceChar(String string, String charToStrip, String charToAdd)
        String newString="";
        StringTokenizer st = new StringTokenizer(string, charToStrip);
        while (st.hasMoreTokens())
            newString = newString + charToAdd + st.nextToken();
        return newString;
    }