我正在做一個項目，我需要在給定時間間隔后根據日期和時間顯示用戶詳細信息。我正在使用下面的代碼，但它不符合我的要求。$(document).ready(function () { $.ajax({ type: "Post", url: "<?php echo site_url('registrationc/map')?>", // data: "unit_id="+unitid, data: { startDate: startdate, endDate: enddate, status: status }, success: function (data) { marker(data); }, }); refresh();});function refresh() { setInterval(function () { $.ajax({ type: "Post", url: "<?php echo site_url('registrationc/map')?>", // data: "unit_id="+unitid, data: { startDate: startdate, endDate: enddate, status: status }, success: function (data) { alert("success 2"); alert(data); marker(data); }, }); }, 30000);}function marker_map(data){ var locations=JSON.parse(data); alert(data); var map = new google.maps.Map(document.getElementById('map'), { zoom: 6, center: new google.maps.LatLng(20.5937,78.9629),//{ lat: 20.5937, lng: 78.9629 } mapTypeId: google.maps.MapTypeId.ROADMAP//HYBRID //SATELLITE//TERRAIN }); var marker, i; //var contentString ='<div id="iw-container"><div class="iw-title" align="center"></div>'; for (i = 0; i < locations.length; i++) { var url="http://maps.google.com/mapfiles/ms/icons/"; if(locations[i]['status']=="green") { url+="green"+"-dot.png"; } else if(locations[i]['status']=="yellow") { url+="yellow"+"-dot.png"; } else if(locations[i]['status']=="orange") { url+="orange"+"-dot.png"; } else { url+="red"+"-dot.png"; } marker = new google.maps.Marker({ position: new google.maps.LatLng(locations[i]['lat'], locations[i]['longi']), icon:{url:url}, map: map});ajax 函數在給定時間間隔后調用，但它不會從數據庫中獲取新數據。例如，如果在第一次調用期間數據庫中有三個條目，而在給定時間間隔之后，第二次調用也只獲取三個條目，即使有五個條目。如何我是否更改代碼以獲得預期結果。
1 回答
慕虎7371278
TA貢獻1802條經驗 獲得超4個贊
您傳遞給 ajax 調用的數據似乎存在問題。比如開始日期和結束日期。
請嘗試以下示例：
function getStats() {
var today = new Date();
var time = today.getHours() + ":" + today.getMinutes();
var time1 = " 00:00";
var status = "all";
var today = new Date();
var dd = String(today.getDate()).padStart(2, "0");
var mm = String(today.getMonth() + 1).padStart(2, "0"); //January is 0!
var yyyy = today.getFullYear();
var startdate = yyyy + "-" + mm + "-" + dd + "" + time1;
var enddate = yyyy + "-" + mm + "-" + dd + " " + time;
return { startdate, enddate, status };
}
$(document).ready(function () {
let { startdate, enddate, status } = getStats();
$.ajax({
type: "Post",
url: "<?php echo site_url('registrationc/map')?>",
data: { startDate: startdate, endDate: enddate, status: status },
success: function (data) {
marker(data);
},
});
refresh();
function refresh() {
setInterval(function () {
let { enddate } = getStats();
$.ajax({
type: "Post",
url: "<?php echo site_url('registrationc/map')?>",
data: { startDate: startdate, endDate: enddate, status: status },
success: function (data) {
marker(data);
},
});
}, 30000);
}
});
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