Código HTML:
<script type="text/javascript"> function showT(fic) { if (window.XMLHttpRequest) { // code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp = new XMLHttpRequest(); } else { // code for IE6, IE5 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { document.getElementById("txtHint").innerHTML = xmlhttp.responseText; } } xmlhttp.open("GET","127.0.0.1/getF.php?q="+fic,true); xmlhttp.send(); } </script> <form> <input type="text" onkeypress="showT(this)"> <input type="submit"> </form>
getF.php
Código PHP:
<?php
echo $q = $_GET['q'];
?>