js使用示例（ajax）:

	<script type="text/javascript">
	function cn_querycode() {
		var code = $('#txt_code').val();
		if (code.length > 0) {
			//return false;
			var url = "./mpajax.php?callback=?";
			$("#s_ing").css("display","block");
			var data = { bianhao: code };
			$.getJSON(url, data, function (backdata) {
				$("#result_info").html(backdata.msg);
				$('#resultModal2').modal();
				//alert(backdata.result);
			});
		}
	}
	</script>