<!DOCTYPE html>
<html>
<body>
<h3>Start typing a name in the input field below:</h3>
<form action="">
First name: <input type="text" id="txt1" onkeyup="showHint(this.value)">
</form>
<p>Suggestions: <span id="txtHint"></span></p>
<script>
function showHint(str) {
var xhttp;
if (str.length == 0) {
document.getElementById("txtHint").innerHTML = "";
return;
}
xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xhttp.responseText;
}
};
xhttp.open("GET", "gethint.php?q="+str, true);
xhttp.send();
}
</script>
</body>
</html>