Escaping a string for Javascript

Question

Hi!
I've been using a lot of time on how to escape special characters in order for Javascript to accept a string. It seems like I need to escape single quotes, double quotes, backslash and newline.
I've written some code, but I just can't get it to work.
public static String editorSafeFilter(String text)
        if(text == null){
            return null;
        StringBuffer buffer = new StringBuffer(text.length());
         for (int i = 0; i < text.length(); i++) {
            char ch = text.charAt(i);
             switch (ch) {
               case 10: // '\n'
                    buffer.append(" ");
                    break;
                case 13:
                     buffer.append(" ");     // '\r'
                     break;
                case '\'':
                    buffer.append('\\');
                    buffer.append("\'");
                    break;
                case '"':
                    buffer.append('\\');
                    buffer.append('\"');
                    break;
                case '\\':
                    buffer.append('\\');
                    buffer.append('\\');
                    break;
                default :
                    buffer.append(ch);
                    break;
        return buffer.toString();
    }Anyone have any links or sample code that works?
thanks!
Vidar

Answer 1

It looks like you want the actual escape sequences... public static String editorSafeFilter(String text)
        if(text == null){
            return null;
        StringBuffer buffer = new StringBuffer(text.length());
         for (int i = 0; i < text.length(); i++) {
            char ch = text.charAt(i);
             switch (ch) {
               case '\012': // '\n'
                    buffer.append("\\n");     // '\n'
                    break;
                case '\015':
                    buffer.append("\\r");     // '\r'
                    break;
                case '\'':
                    buffer.append("\\\'");
                    break;
                case '\"':
                    buffer.append("\\\"");
                    break;
                case '\\':
                    buffer.append("\\\\");
                    break;
                default :
                    buffer.append(ch);
                    break;
        return buffer.toString();
    }