<!DOCTYPE html>
<html>
<head>
<title>Ajax example</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script scr="//code.jquery.com/jquery-1.11.2.min.js"></script>
</head>
<body>
<h1>AJAX exapmle</h1>
<p>Your Name:</p>
<input type="text" id="input1"/>
<br/><br/>
<p id="hello"></p>
<br/>
<button id="send">Async send message AJAX</button>
<script>
// language=JQuery-CSS
$("#send").click(function () {
var params = {
text: $("#input1").val(),
}
$.post("ajax.php", params, function (data) {
$("#hello").html(data);
});
}
);
</script>
</body>
</html><?php
$text = $_POST["text"];
echo 'Hello, ' . $text;$(document).ready(function () {
// Ваш код
});$(document).ready(function () {
// language=JQuery-CSS
$("#send").click(function () {
var params = {
text: $("#input1").val(),
}
$.post("ajax.php", params, function (data) {
$("#hello").html(data);
});
}
);
})<script scr="//code.jquery.com/jquery-1.11.2.min.js"></script>scr, а src 
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