$(document).ready(function(){
    $("#submit").click(function(){
    //Disable form inputs
    $(":input").attr("disabled", true);
    var dataString =  'name=test';
    $.ajax({
    type: "POST",
    url: "1.php",
    data: dataString,
    success: function(){
    //Enable form inputs after form successfully submitted
    $(":input").removeAttr('disabled');
    }
    });
    return false;
    });
});

<form>
     Name:<input type="test" name="name" id="name" />
     <input type="submit" name="submit" id="submit" />
</form>