ajax与post

$.ajax({  
		type:'post', 
		url:'<%=deleteAction%>',
		data:{sn:key},
		beforeSend:function(XMLHttpRequest){  
			alert("1beforeSend");
		,
		success:function(data){
			swal({
				title: "删除成功",
				text: "",
				type: "success" 
				}, function () {
					$('form').submit();
					});
				},
		complete:function(XMLHttpRequest,textStatus){
			alert("2textStatus:"+textStatus); 
			if(textStatus=='timeout'){
				alert("timeout");
			}else{
				alert("3no---timeout");
				}
			}, 
		error: function(XMLHttpRequest, textStatus, errorThrown){
			alert(XMLHttpRequest.readyState + XMLHttpRequest.status + XMLHttpRequest.responseText);
				}
		}); 

$.post(
		'<%=deleteAction%>',
		{sn:key},
		function(data,status){
			/* alert(data); */
			/*alert(status); */
			if(status=="success"){
				swal({
					title: "删除成功",
					text: "",
					type: "success" 
				   }, function () {
						$('form').submit();
					});	
			}else{
				swal({
					title: "删除失败",
					text: "",
					type: "error" 
					}, function () {
						window.location.href = "<%=searchAction%>";
					});	
				}
			});