我正在使用 Matt Schmidt 的 jQuery Timer 插件
/*
*
* jQuery Timer plugin v0.1
* Matt Schmidt [http://www.mattptr.net]
*
* Licensed under the BSD License:
* http://mattptr.net/license/license.txt
*
*/
jQuery.timer = function (interval, callback) {
/**
*
* timer() provides a cleaner way to handle intervals
*
* @usage
* $.timer(interval, callback);
*
*
* @example
* $.timer(1000, function (timer) {
* alert("hello");
* timer.stop();
* });
* @desc Show an alert box after 1 second and stop
*
* @example
* var second = false;
* $.timer(1000, function (timer) {
* if (!second) {
* alert('First time!');
* second = true;
* timer.reset(3000);
* }
* else {
* alert('Second time');
* timer.stop();
* }
* });
* @desc Show an alert box after 1 second and show another after 3 seconds
*
*
*/
var interval = interval || 100;
if (!callback)
return false;
_timer = function (interval, callback) {
this.stop = function () {
clearInterval(self.id);
};
this.internalCallback = function () {
callback(self);
};
this.reset = function (val) {
if (self.id)
clearInterval(self.id);
var val = val || 100;
this.id = setInterval(this.internalCallback, val);
};
this.interval = interval;
this.id = setInterval(this.internalCallback, this.interval);
var self = this;
};
return new _timer(interval, callback);
};
我在以下链中使用它：
$(document).ready(function () {
// Get the requestId
var requestId = $('#RequestId').val();
var timerInterval = 10000;
// On document load create a timer which will poll the controller every second
$.timer(timerInterval, function (timer) {
$.ajax(
{
type: 'GET',
url: "/CreateFIS/GetRequestStatus",
data: { strRequestId: requestId },
success:
function (response) {
alert(response);
if (response != null) {
switch (response.toString()) {
case 'Pending':
// The request is still currently awaiting processing
$('#InformationSpan').html('The request is currently Pending. Please Wait...');
timer.stop();
timer.reset(timerInterval);
break;
case 'Cancelled':
// The request has been cancelled
$('#InformationSpan').html('The request has been cancelled.');
timer.stop();
break;
case 'Error':
// There was an error with the request
$('#InformationSpan').html('There has been an error generating the request. Please contact the administrator regarding this error.');
break;
case 'In Progress':
// Generation is in progress
$('#InformationSpan').html('The request is currently in progress, and will be with you shortly. Please Wait...');
timer.stop();
timer.reset(timerInterval);
break;
case 'Generated':
// Generation has finished
$('#InformationSpan').html('The request has finished generating.');
timer.stop();
//Todo redirect to viewer
break;
default:
break;
}
}
},
error: function (req, status, error) {
alert(req);
alert(status);
alert(error);
}
});
});
});
我的问题是，ajax 调用实际上只执行一次，我希望每次达到计时器间隔时都执行一次。我曾尝试在调用 reset() 之前删除对 stop() 的调用，但这没有区别。
我错过了一些明显的东西吗？
编辑：我认为这并不重要，但这是我控制器上的方法：
public JsonResult GetRequestStatus(string strRequestId)
{
Guid requestId;
bool result = Guid.TryParse(strRequestId, out requestId);
if(!result)
{
// TODO handle error here
return null;
}
FISServiceClient fisServiceClient = new FISServiceClient();
var status = fisServiceClient.GetFISRequestStatus(requestId);
if (status == null) return null;
return Json(status.FISRequestStatusName, JsonRequestBehavior.AllowGet);
}