Getting The Count Of Words And Characters In A Text Using JavaScript

<input type="text" id="txtinput" />
<button onclick="countwords()">
        Check Count</button>
<script>
        function countwords() {
            var val = document.getElementById("txtinput").value;
            var words = 0, chars = 0;
            if (val != "") {
                words = val.replace(/\s+/gi, ' ').split(' ').length; // Count words
                chars = val.length;                                 // Count characters
            }
            alert(chars + " Characters & " + words + " Words!");
        }
</script>