<form name="inputform" action="page.php" method="get" onsubmit="getform()">
    <input value="person" name="user">
    <input value="password" name="pwd">
    <input value="place" name="organization">
    <input value="key" name="requiredkey">
    <button type="submit">Submit</button>
</form>

url = $("#form").serialize();
$.ajax({
    type: "GET",
    dataType: "json",
    url: url,
    success: function (data) {
        //modify table
    }
});

function getform() {
        var http  = new XMLHttpRequest();
        http.open('GET', 'page.php', true);
        http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8');
        http.send();
    }