我有一个问题,当提交表单时,所有活跃的ajax请求失败,并触发错误事件。
如何在jQuery中停止所有活动ajax请求而不触发错误事件?
我有一个问题,当提交表单时,所有活跃的ajax请求失败,并触发错误事件。
如何在jQuery中停止所有活动ajax请求而不触发错误事件?
当前回答
给每个xhr请求一个唯一的id,并在发送之前将对象引用存储在一个对象中。 在xhr请求完成后删除引用。
随时取消所有请求:
$.ajaxQ.abortAll();
返回被取消的请求的唯一id。仅用于测试目的。
工作职能:
$.ajaxQ = (function(){
var id = 0, Q = {};
$(document).ajaxSend(function(e, jqx){
jqx._id = ++id;
Q[jqx._id] = jqx;
});
$(document).ajaxComplete(function(e, jqx){
delete Q[jqx._id];
});
return {
abortAll: function(){
var r = [];
$.each(Q, function(i, jqx){
r.push(jqx._id);
jqx.abort();
});
return r;
}
};
})();
返回一个具有单个函数的对象,该对象可用于在需要时添加更多功能。
其他回答
我发现对多个请求来说太简单了。
步骤1:在页面顶部定义一个变量:
xhrPool = []; // no need to use **var**
step2:在所有ajax请求中设置beforeSend:
$.ajax({
...
beforeSend: function (jqXHR, settings) {
xhrPool.push(jqXHR);
},
...
第三步:在任何需要的地方使用它:
$.each(xhrPool, function(idx, jqXHR) {
jqXHR.abort();
});
每次你创建一个ajax请求,你可以使用一个变量来存储它:
var request = $.ajax({
type: 'POST',
url: 'someurl',
success: function(result){}
});
然后你可以中止请求:
request.abort();
您可以使用一个数组来跟踪所有挂起的ajax请求,并在必要时中止它们。
下面的代码片段允许您维护一个请求列表(池),并在需要时中止它们。最好放在html的<HEAD>中,在任何其他AJAX调用之前。
<script type="text/javascript">
$(function() {
$.xhrPool = [];
$.xhrPool.abortAll = function() {
$(this).each(function(i, jqXHR) { // cycle through list of recorded connection
jqXHR.abort(); // aborts connection
$.xhrPool.splice(i, 1); // removes from list by index
});
}
$.ajaxSetup({
beforeSend: function(jqXHR) { $.xhrPool.push(jqXHR); }, // annd connection to list
complete: function(jqXHR) {
var i = $.xhrPool.indexOf(jqXHR); // get index for current connection completed
if (i > -1) $.xhrPool.splice(i, 1); // removes from list by index
}
});
})
</script>
以下是如何在任何点击中连接它(如果您的页面放置了许多AJAX调用,并且您试图导航离开,则很有用)。
$ ->
$.xhrPool = [];
$(document).ajaxSend (e, jqXHR, options) ->
$.xhrPool.push(jqXHR)
$(document).ajaxComplete (e, jqXHR, options) ->
$.xhrPool = $.grep($.xhrPool, (x) -> return x != jqXHR);
$(document).delegate 'a', 'click', ->
while (request = $.xhrPool.pop())
request.abort()
把我的帽子扔进去。提供针对xhrPool数组的中止和删除方法,并且不容易出现ajaxSetup覆盖问题。
/**
* Ajax Request Pool
*
* @author Oliver Nassar <onassar@gmail.com>
* @see http://stackoverflow.com/questions/1802936/stop-all-active-ajax-requests-in-jquery
*/
jQuery.xhrPool = [];
/**
* jQuery.xhrPool.abortAll
*
* Retrieves all the outbound requests from the array (since the array is going
* to be modified as requests are aborted), and then loops over each of them to
* perform the abortion. Doing so will trigger the ajaxComplete event against
* the document, which will remove the request from the pool-array.
*
* @access public
* @return void
*/
jQuery.xhrPool.abortAll = function() {
var requests = [];
for (var index in this) {
if (isFinite(index) === true) {
requests.push(this[index]);
}
}
for (index in requests) {
requests[index].abort();
}
};
/**
* jQuery.xhrPool.remove
*
* Loops over the requests, removes it once (and if) found, and then breaks out
* of the loop (since nothing else to do).
*
* @access public
* @param Object jqXHR
* @return void
*/
jQuery.xhrPool.remove = function(jqXHR) {
for (var index in this) {
if (this[index] === jqXHR) {
jQuery.xhrPool.splice(index, 1);
break;
}
}
};
/**
* Below events are attached to the document rather than defined the ajaxSetup
* to prevent possibly being overridden elsewhere (presumably by accident).
*/
$(document).ajaxSend(function(event, jqXHR, options) {
jQuery.xhrPool.push(jqXHR);
});
$(document).ajaxComplete(function(event, jqXHR, options) {
jQuery.xhrPool.remove(jqXHR);
});