如果我有一个长foreach循环的ajax调用，我更新了一个文本文件，同时我想读取该文件并显示从另一个第二个调用的第一次调用更改的内容，我怎么能实现这一点?
第一个程序运行时，第二个程序等待，直到第一个程序完成。
我想同时运行第一个和第二个。在第二次调用中，每隔一秒我都想检查由第一次调用创建的文件中的状态——类似于进度条。
function startTimer(){
timer = window.setInterval(refreshProgress, 1000);
}
function refreshProgress(){
$.ajax({
type: "POST",
url: '/index.php?/system/run_progress_checker',
dataType:"json",
success: function(data)
{
console.log(data);
if (data.percent == 100) {
window.clearInterval(timer);
timer = window.setInterval(completed, 1000);
}
},
error: function(xhr, textStatus, error){
console.log(xhr.statusText);
console.log(textStatus);
console.log(error);
}
});
}
function completed() {
//$("#message").html("Completed");
window.clearInterval(timer);
}
$(".systemform").submit(function(e) { //run system
$.when(startTimer(),run_system()).then(function(){});
e.preventDefault(); // avoid to execute the actual submit of the form.
});
function run_system(){
$("#leftcontainer").html("");
$("#leftcontainer").show();
$("#chartContainer").hide();
$(".loading").show();
var sysid = $(".sysid:checked").val();
var oddstype = $(".odds_pref").val();
var bettypeodds = $(".bet_type_odds").val();
var bookie = $(".bookie_pref").val();
if (typeof oddstype === "undefined") {
var oddstype = $(".odds_pref_run").val();
var bettypeodds = $(".bet_type_odds_run").val();
var bookie = $(".bookie_pref_run").val();
}
$.ajax({
type: "POST",
url: '/index.php?/system/system_options/left/'+'1X2/'+oddstype+'/'+bettypeodds+'/'+bookie,
data: {
system : sysid,
showpublicbet : showpublicbet }, // serializes the form's elements.
dataType:"json",
success: function(data)
{
console.log(data);
$("#systemlist").load('/index.php?/system/refresh_system/'+sysid,function(e){
systemradiotocheck();
});
$("#resultcontainer").load('/index.php?/system/showresults/'+sysid+'/false');
$("#resultcontainer").show();
$("#leftcontainer").html(data.historic_table);
$("#rightcontainer").html(data.upcoming_table);
var count = 0;
var arr = [];
$("#rightrows > table > tbody > tr").each(function(){
var row = $(this).data('row');
if(typeof row !== 'undefined'){
var rowarr = JSON.parse(JSON.stringify(row));
arr[count] = rowarr;
$(this).find('td').each(function(){
var cell = $(this).data('cell');
if(typeof cell !== 'undefined'){
var cellarr = JSON.parse(JSON.stringify(cell));
arr[count][6] = cellarr[0];
}
});
count ++;
}
});
if(oddstype == "EU" && bookie == "Bet365"){
$('.bet365').show();
$('.pinnacle').hide();
$('.ukodds').hide();
}
if(oddstype == "EU" && bookie == "Pinnacle"){
$('.pinnacle').show();
$('.bet365').hide();
$('.ukodds').hide();
}
if(oddstype == "UK"){
$('.bet365').hide();
$('.pinnacle').hide();
$('.ukodds').show();
}
if(bookie == "Pinnacle"){
$(".pref-uk").hide();
}
else{
$(".pref-uk").show();
}
$(".loading").hide();
runned = true;
var options = {
animationEnabled: true,
toolTip:{
content: "#{x} {b} {a} {c} {y}"
},
axisX:{
title: "Number of Games"
},
axisY:{
title: "Cumulative Profit"
},
data: [
{
name: [],
type: "splineArea", //change it to line, area, column, pie, etc
color: "rgba(54,158,173,.7)",
dataPoints: []
}
]
};
//console.log(data);
var profitstr = 0;
var parsed = $.parseJSON(JSON.stringify(data.export_array.sort(custom_sort)));
var counter = 0;
for (var i in parsed)
{
profitstr = profitstr + parsed[i]['Profit'];
//console.log(profitstr);
var profit = parseFloat(profitstr.toString().replace(',','.'));
//console.log(profit);
var event = parsed[i]['Event'].toString();
var hgoals = parsed[i]['Home Goals'].toString();
var agoals = parsed[i]['Away Goals'].toString();
var result = hgoals + ":" + agoals;
var date = parsed[i]['Date'].toString();
var bettype = parsed[i]['Bet Type'];
var beton = parsed[i]['Bet On'];
var handicap = parsed[i]['Handicap'];
//alert(profitstr);
//alert(profit);
//options.data[0].name.push({event});
counter++;
options.data[0].dataPoints.push({x: counter,y: profit,a:event,b:date,c:result});
}
$("#chartContainer").show();
$("#chartContainer").CanvasJSChart(options);
$(".hidden_data").val(JSON.stringify(data.export_array));
$(".exportsys").removeAttr("disabled");
$(".exportsys").removeAttr("title");
},
error: function(xhr, textStatus, error){
console.log(xhr.statusText);
console.log(textStatus);
console.log(error);
}
});
}
后端部分并不那么重要，因为它可以工作。
听起来像是jQuery $的一个很好的例子。当美元区间。在第一部分中，$。当，您将有第一个ajax调用，当它完成时…您可以将数据从第一部分移植到$。然后部分。例如:
$.when(
//perform first ajax call and pass this data to the 'then'.
$.ajax(
{
type: "POST",
url: "<<insert url>>",
contentType: "application/json; charest=utf-8",
success: function (data) {
//process data
},
error: function (XMLXHttpRequest, textStatus, errorThrown) {
}
})
).then(function (data, textStatus, jqXHR) {
var obj = $.parseJSON(data); // take data from above and use it to perform second ajax call.
var params = '{ "CustomerID": "' + obj[0].CustomerID + '" }';
$.ajax(
{
type: "POST",
url: "<<insert url>>",
data: params,
contentType: "application/json; charest=utf-8",
success: function (data) {
//process data
},
error: function (XMLXHttpRequest, textStatus, errorThrown) {
}
})
});
}
});