How to remove vulgar words using java script

        function ButtonDisplay_onclick() {

 

 var i;

            var words = new Array();

            words[0] = "stupid";

            words[1] = "idiot";

            words[2] = "yuck";

            var s = document.getElementById("DisplayTxt").value;

            var s2 = document.getElementById("aa").value;

            for (i = 0; i < words.length; i++) {

                if (s.match(words[i]) == words[i]) {

                    document.getElementById("DisplayTxt").focus();

                    document.getElementById("DisplayTxt").value = "";

                }

            }

}

<div id="aa">

        <input id="ButtonDisplay" type="button" value="Click On" onclick="return ButtonDisplay_onclick()" />

        <input type="text" id="DisplayTxt" />

    </div>