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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Test</title>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
</head>
<body>
    <div class="results">Ждем ответа</div>

<script>
    $(document).ready(function(){
        $.ajax({
            method: "POST",
            url: "content.php",
            data: { name: "John", city: "Boston" },
            dataType: "html"
        })
    });
</script>
</body>
</html>