This question already has answers here:
</div>
</div>
<div class="grid--cell mb0 mt4">
<a href="/questions/5962808/onchange-is-called-only-when-the-element-loses-focus" dir="ltr">onChange is called only when the element loses focus</a>
<span class="question-originals-answer-count">
(2 answers)
</span>
</div>
<div class="grid--cell mb0 mt8">Closed <span title="2014-12-17 12:50:43Z" class="relativetime">5 years ago</span>.</div>
</div>
</aside>
My code tries to implement a keyword search box using AJAX to get live results while writing, but i can't do it. However, when i go keyboard ENTER it searches. My problem is really while writing not to have to press ENTER .
example i would like to implement: http://expresso.sapo.pt/ranking-das-escolas-2013=f840093
index.html:
<!DOCTYPE html>
<html>
<head>
<title> Escolha de molecula</title>
<script>
function showUser(str) {
if (str=="") {
document.getElementById("ajax").innerHTML="";
return;
}
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("ajax").innerHTML=xmlhttp.responseText;
}
}
var txq=document.getElementById("textquery").value;
xmlhttp.open("POST","output.php",true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send("textquery=" + txq);
}
</script>
</head>
<body>
<h1 style="text-align:center;font-size: 60px">
Search for molecule in our database
</h1>
<hr>
<p style="color:blue">
<q>
I have lived much of my life among molecules. They are good company.
</q>
George Wald
</p>
<hr>
<p style="font-family:verdana">
just write something in the search bar and it will retrieve it <br>
More information at: <a href="http://xldb.fc.ul.pt/" target="_blank">http://xldb.fc.ul.pt/</a>
</p>
search: <input type="text" id="textquery" onchange="showUser()" ><br>
</form>
<br>
<div id="ajax"><b>search results will be shown here</b></div>
</body>
</html>
output.php:
<?php
$con=mysqli_connect("127.0.0.1","","","ulchemd");
// Check connection
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$pesquisa =mysqli_real_escape_string($con, $_POST['textquery']);
$resposta = mysqli_query($con,"SELECT * from target WHERE molecule.target_text like '%$pesquisa%' ");
echo " <b> Search results:";
echo "<table border='5'>
<tr>
<th>ID</th>
<th>target_type</th>
<th>name</th>
<th>text</th>
</tr>";
while($row = mysqli_fetch_array($resposta)) {
//este while vai buscar cada linha da tabela num ciclo como um cursor
echo "<tr>";
echo "<td>" . $row['tid'] . "</td>";
echo "<td>" . $row['target_type'] . "</td>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['target_text'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
Thanks a lot :)
</div>
