标签：
1. php and Ajax
1.a
html code
<html> <head> <script> function showHint(str) { if (str.length == 0) { document.getElementById("txtHint").innerHTML = ""; return; } else { var xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById("txtHint").innerHTML = this.responseText; } }; xmlhttp.open("GET", "gethint.php?q=" + str, true); xmlhttp.send(); } } </script> </head> <body> <p><b>Start typing a name in the input field below:</b></p> <form> First name: <input type="text" onkeyup="showHint(this.value)"> </form> <p>Suggestions: <span id="txtHint"></span></p> </body> </html>
1.b
gethint.php
<?php // Array with names $a[] = "Anna"; $a[] = "Brittany"; $a[] = "Cinderella"; $a[] = "Diana"; $a[] = "Eva"; $a[] = "Fiona"; $a[] = "Gunda"; $a[] = "Hege"; $a[] = "Inga"; $a[] = "Johanna"; $a[] = "Kitty"; $a[] = "Linda"; $a[] = "Nina"; $a[] = "Ophelia"; $a[] = "Petunia"; $a[] = "Amanda"; $a[] = "Raquel"; $a[] = "Cindy"; $a[] = "Doris"; $a[] = "Eve"; $a[] = "Evita"; $a[] = "Sunniva"; $a[] = "Tove"; $a[] = "Unni"; $a[] = "Violet"; $a[] = "Liza"; $a[] = "Elizabeth"; $a[] = "Ellen"; $a[] = "Wenche"; $a[] = "Vicky"; // get the q parameter from URL $q = $_REQUEST["q"]; $hint = ""; // lookup all hints from array if $q is different from "" if ($q !== "") { $q = strtolower($q); $len=strlen($q); foreach($a as $name) { if (stristr($q, substr($name, 0, $len))) { if ($hint === "") { $hint = $name; } else { $hint .= ", $name"; } } } } // Output "no suggestion" if no hint was found or output correct values echo $hint === "" ? "no suggestion" : $hint; ?>
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原文地址：http://www.cnblogs.com/rabbitq/p/5848693.html
