使用新参数中止长轮询ajax请求并重新启动请求
如何取消ajax请求，然后使用新参数再次调用它？ 使用我的代码，之前的ajax请求仍然存在。
var stats_url = '/stats'; var live_stats_ajax_object = $.ajax(); $(".check-round").on("click", function(){ live_stats_ajax_object.abort(); round = $(this).attr('class').split(' ')[0]; get_live_stats(round); }); var get_live_stats = function(round) { live_stats_ajax_object = $.ajax({ url: stats_url, type: "GET", data: 'live_stats=true' + "&event_id=" + $( "#event-list option:selected" ).val() + "&fight_id=" + $( 'input[name=fightlist]:checked' ).val() + "&round=" + round, dataType: "json", timeout: 3500, complete: function(xhr, textStatus) { console.log("polling again stats for " + round); if (textStatus != "abort") { setTimeout( function() { get_live_stats(round); }, 10000 ); } }, success: function(data) { console.log("polling and got live stats for " + round); console.log(data); } }) .fail(function() { console.log("polling failed and couldn't get live stats for " + round); }) }; 我已经在这几个小时了。 谢谢
编辑，更新
尝试
// create empty object var live_stats_ajax_object = {} // reference for `setTimeout` within `get_live_stats` , id = null , stats_url = "/stats" , get_live_stats = function (round) { var eventlist = $( "#event-list option:selected" ).val() , fightlist = $( 'input[name=fightlist]:checked' ).val(); live_stats_ajax_object = $.ajax({ type: "GET", url: stats_url, data: "live_stats=true&event_id=" + eventlist + "&fight_id=" + fightlist + "&round=" + round, timeout: 3500 }); // return `live_stats_ajax_object` return live_stats_ajax_object .done(function (data, textStatus, jqxhr) { console.log("polling and got live stats for " + round + "\n" , data); }) .fail(function (jqxhr, textStatus, errorThrown) { console.log("polling failed and couldn't get live stats for " + round); }) .always(function (jqxhr, textStatus) { if (textStatus !== "abort") { // set `id` to `setTimeout`'s `numerical ID` // call `get_live_stats()` within `setTimeout` id = setTimeout(function () { get_live_stats(round); }, 10000); } }); }; $(".check-round").on("click", function () { var round = $(this).attr('class').split(" ")[0]; // at initial click `live_stats_ajax_object` is empty object , // not having `jqxhr` `promise` property ; // call `get_live_stats()` , which sets `live_stats_ajax_object` // to `$.ajax()` , having `state` property at returned `jqxhr` object if (!live_stats_ajax_object.hasOwnProperty("state")) { get_live_stats(round); } else { // if `id` was set during initial call to `get_live_stats()` if (id) { // `.abort()` previous `live_stats_ajax_object` request , // `clearTimeout()` of `id` , set `id` to `null` // call `get_live_stats()` with current `round` argument live_stats_ajax_object.abort(); clearTimeout(id); id = null; get_live_stats(round); } } });