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

我已经更新了代码,使它为我工作

$.xhrPool = [];
$.xhrPool.abortAll = function() {
    $(this).each(function(idx, jqXHR) {
        jqXHR.abort();
    });
    $(this).each(function(idx, jqXHR) {
        var index = $.inArray(jqXHR, $.xhrPool);
        if (index > -1) {
            $.xhrPool.splice(index, 1);
        }
    });
};

$.ajaxSetup({
    beforeSend: function(jqXHR) {
        $.xhrPool.push(jqXHR);
    },
    complete: function(jqXHR) {
        var index = $.inArray(jqXHR, $.xhrPool);
        if (index > -1) {
            $.xhrPool.splice(index, 1);
        }
    }
});

其他回答

最好使用独立代码.....

var xhrQueue = []; 

$(document).ajaxSend(function(event,jqxhr,settings){
    xhrQueue.push(jqxhr); //alert(settings.url);
});

$(document).ajaxComplete(function(event,jqxhr,settings){
    var i;   
    if((i=$.inArray(jqxhr,xhrQueue)) > -1){
        xhrQueue.splice(i,1); //alert("C:"+settings.url);
    }
});

ajaxAbort = function (){  //alert("abortStart");
    var i=0;
    while(xhrQueue.length){ 
        xhrQueue[i++] .abort(); //alert(i+":"+xhrQueue[i++]);
    }
};

做一个池的所有ajax请求和中止他们.....

var xhrQueue = []; 

$(document).ajaxSend(function(event,jqxhr,settings){
    xhrQueue.push(jqxhr); //alert(settings.url);
});

$(document).ajaxComplete(function(event,jqxhr,settings){
    var i;   
    if((i=$.inArray(jqxhr,xhrQueue)) > -1){
        xhrQueue.splice(i,1); //alert("C:"+settings.url);
    }
});

ajaxAbort = function (){  //alert("abortStart");
    var i=0;
    while(xhrQueue.length){ 
        xhrQueue[i++] .abort(); //alert(i+":"+xhrQueue[i++]);
    }
};

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>

安迪的代码有一些问题,但它给了我一些很好的想法。第一个问题是,我们应该弹出任何成功完成的jqXHR对象。我还必须修改abortAll函数。下面是我最终的工作代码:

$.xhrPool = [];
$.xhrPool.abortAll = function() {
            $(this).each(function(idx, jqXHR) {
                        jqXHR.abort();
                        });
};
$.ajaxSetup({
    beforeSend: function(jqXHR) {
            $.xhrPool.push(jqXHR);
            }
});
$(document).ajaxComplete(function() {
            $.xhrPool.pop();
            });

我不喜欢ajaxComplete()做事情的方式。无论我如何尝试配置. ajaxsetup,它都不工作。

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);
});