Bunu kod betiğinde belirttiğiniz kod ile tamamen değiştirin :

 <div id="container">
        <form name="form1">
            <input name="text" placeholder="Enter one of the bad words above and then try submitting the form." onClick="select_area()">

            <input type="button" value="Submit" onClick="validate_text();">
        </form>
    </div>

bunuda </body> tagının hemen üstüne yapıştırın. alt tarafta 3. satırda yasaklayacağınız kelimeleri virgülle ve tırnakla ayırarak yazın. Şuankiler "bloody", "war", "terror"

<script type="text/javascript">
        // Enter the words to be filtered in the line below:
        var swear_words_arr = new Array("bloody", "war", "terror");

        var swear_alert_arr = new Array;
        var swear_alert_count = 0;

        function reset_alert_count() {
            swear_alert_count = 0;
        }

        function validate_text() {
            reset_alert_count();
            var compare_text = document.form1.text.value;
            for (var i = 0; i < swear_words_arr.length; i++) {
                for (var j = 0; j < (compare_text.length); j++) {
                    if (swear_words_arr[i] == compare_text.substring(j, (j + swear_words_arr[i].length)).toLowerCase()) {
                        swear_alert_arr[swear_alert_count] = compare_text.substring(j, (j + swear_words_arr[i].length));
                        swear_alert_count++;
                    }
                }
            }
            var alert_text = "";
            for (var k = 1; k <= swear_alert_count; k++) {
                alert_text += "\n" + "(" + k + ")  " + swear_alert_arr[k - 1];
            }
            if (swear_alert_count > 0) {
                alert("The message will not be sent!!!\nThe following illegal words were found:\n_______________________________\n" + alert_text + "\n_______________________________");
                document.form1.text.select();
            } else {
                document.form1.submit();
            }
        }

        function select_area() {
            document.form1.text.select();
        }
        window.onload = reset_alert_count;
    </script>