我在000webhost中遇到AJAX问题。 AJAX的输出未显示。另外，检查时控制台中没有错误。
这是我的网站链接： https://cwp-geoworld.000webhostapp.com/
AJAX部分与localhost配合正常，单击侧边栏后，它可以在侧边栏中显示大洲列表，并在页面中间显示表格。
示例如下： https://drive.google.com/open?id=1Tn5hQXepA--o4LTqBc_DzjeZ17yz830Z
以下是index.php的代码，其中包含AJAX代码：
<?php
include("control.php");
//require_once( "classes/session.class.php" );
$username = Session::getInstance()->getProperty("username");
$userRole = Session::getInstance()->getProperty("userRole");
require_once( "classes/PDOConnection.class.php" );
//header('Content-type: application/json');
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>GeoWorld | Home</title>
<!--Icon at the tab-->
<link rel="icon" type="image/png" href="images/globe_icon.png"/>
<!-- Tell the browser to be responsive to screen width -->
<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
<link rel="stylesheet" href="template/other_pages/bower_components/bootstrap/dist/css/bootstrap.min.css">
<!-- Font Awesome -->
<link rel="stylesheet" href="template/other_pages/bower_components/font-awesome/css/font-awesome.min.css">
<!-- Ionicons -->
<link rel="stylesheet" href="template/other_pages/bower_components/Ionicons/css/ionicons.min.css">
<!-- Theme style -->
<link rel="stylesheet" href="template/other_pages/dist/css/AdminLTE.min.css">
<!-- Skins -->
<link rel="stylesheet" href="template/other_pages/dist/css/skins/skin-purple.css">
<!-- Google Font -->
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,700,300italic,400italic,600italic">
</head>
<body class="hold-transition skin-purple sidebar-mini">
<!--WRAPPER-->
<div class="wrapper">
<!-- Main Header -->
<header class='main-header'>
<!-- Logo -->
<a href='index.php' class='logo'>
<!-- mini logo for sidebar mini 50x50 pixels -->
<span class='logo-mini'><i class='fa fa-globe'></i><b>Geo</b></span>
<!-- logo for regular state and mobile devices -->
<span class='logo-lg'><b>Geo</b>World</span>
</a>
<!-- Header Navbar -->
<nav class='navbar navbar-static-top' role='navigation'>
<!-- Sidebar toggle button-->
<a href='#' class='sidebar-toggle' data-toggle='push-menu' role='button'>
<span class='sr-only'>Toggle navigation</span>
</a>
<div class="navbar-custom-menu">
<ul class="nav navbar-nav">
<!--Include Conditions for Navbar-->
<?php include ('include/navbar.php'); ?>
</ul>
</div>
</nav>
</header>
<!--Include Sidebar-->
<?php include ('include/sidebar.php'); ?>
<!-- CONTENT WRAPPER -->
<div class="content-wrapper">
<!-- Content Header (Page header) -->
<section class="content-header">
<h1 align='center'>
Welcome to GeoWorld
</h1>
</section>
<!-- Main content -->
<section class="content container-fluid">
<!-- search form (Optional) -->
<div id="searchTextBox">
<div class="input-group">
<input type="text" id='search' name="search_country" maxlength=3 class="form-control" placeholder="Search for a country here...">
<span class="input-group-btn">
<button type="submit" id='search-btn' class="btn btn-flat"><i class="fa fa-search"></i>
</button>
</span>
</div>
</div><!-- /.search form -->
<br/>
<div class="searchResults"></div><br/>
<div class="box-body">
<div id="records"></div>
</div>
</section><!-- /.content -->
</div><!-- /.content-wrapper -->
</div><!-- ./wrapper -->
<!-- Modal for show more details about country -->
<div class="modal fade" id="countryModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">More details about the country</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body"></div>
<div class="modal-footer">
<!--<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>-->
<!--<button type="button" class="btn btn-primary">Save changes</button>-->
</div>
</div>
</div>
</div>
<!-- Modal for show details about city -->
<div class="modal fade" id="cityModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">City details</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body"></div>
<div class="modal-footer">
<!--<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>-->
<!--<button type="button" class="btn btn-primary">Save changes</button>-->
</div>
</div>
</div>
</div>
<!-- Modal to update HOS -->
<div class="modal fade" id="updateModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Edit details</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body"></div>
</div>
</div>
</div>
<!-- Modal to upload flag -->
<div class="modal fade" id="uploadModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Upload Flag</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body"></div>
</div>
</div>
</div>
</body>
</html>
<!-- REQUIRED JS SCRIPTS -->
<script
src="https://code.jquery.com/jquery-3.3.1.min.js"
integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
crossorigin="anonymous">
<script src="http://code.jquery.com/jquery-3.1.1.min.js"></script>
<!-- jQuery 3 -->
<script src="template/other_pages/bower_components/jquery/dist/jquery.min.js"></script>
<!-- Bootstrap 3.3.7 -->
<script src="template/other_pages/bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
<!-- AdminLTE App -->
<script src="template/other_pages/dist/js/adminlte.min.js"></script>
<!--script for displaying continents and countries records-->
<script type="text/javascript">
$(document).ready(function(){
//$('#searchTextBox').hide();
$('.records').hide();
$("input[name='search_country']").on('keypress', function (e) {
var charCode = e.which;
if ((charCode > 64 && charCode < 91) || (charCode > 96 && charCode < 123) || charCode == 8)
return true;
else
return false;
});
});
$(function()
{
$.getJSON( "showAllContinents.php", function(obj)
{
$.each(obj, function(key, value)
{
var sidebarOption = "";
//sidebarOption = '<input type="hidden" value="showAllContinents" name="action"/>';
sidebarOption += '<li>';
sidebarOption += '<a data-id="'+value.ID+'" class="sidebar-country">';
sidebarOption += value.Name;
sidebarOption += '</a>';
sidebarOption += '</li>';
$(".treeview-menu").append(sidebarOption);
});
});//end of $.getJSON function
$("#options_continent").change(function() {
getCountryRecords($(this).val());
});//end of option function
$(document).on('click', '.sidebar-country', function() {
getCountryRecords($(this).attr('data-id'));
});
//to show LifeExpectancy, GNP and HOS when button is clicked
$("#records").on("click", "#tbl_countries button#more_details",function()
{
$(".modal-body").empty();
var A3Code = $(this).val();
$(".records").show();
$.get(
'showCountryDetails.php',
{A3Code: A3Code},
function(data)
{
console.log(data);
//var result= $.parseJSON(data);
//console.log(result);
var string ='<table id="tbl_countries" class="table table-bordered table-hover"><tr><th>Life Expectancy</th><th>GNP</th><th>Head of State</th></tr>';
$.each( data, function( key, value )
{
$(".records").empty();
string += "<tr>"
+"<td>"+value['LifeExpectancy'] +"</td>"
+"<td>"+value['GNP']+"</td>"
+"<td>"+value['HeadOfState']+"</td>"
+"</tr>";
});
string += '</table>';
$(".modal-body").append(string);
} //end of function data
); //end of get
});//end of click button
//to show city details when button is clicked
$("#records").on("click", "#tbl_countries button#city_details",function()
{
$(".modal-body").empty();
var A3Code = $(this).val();
$(".records").show();
$.get(
'showCityDetails.php',
{A3Code: A3Code},
function(data)
{
var string ='<table id="tbl_countries" class="table table-bordered table-hover"><tr><th>City Name</th><th>District</th><th>Population</th><th>Latitude</th><th>Longitude</th></tr>';
$.each( data, function( key, value )
{
$(".records").empty();
string += "<tr>"
+"<td>"+value['name'] +"</td>"
+"<td>"+value['district']+"</td>"
+"<td>"+value['population']+"</td>"
+"<td>"+value['lat']+"</td>"
+"<td>"+value['lng']+"</td>"
+"</tr>";
});
string += '</table>';
//$(".records").append(string);
$(".modal-body").append(string);
} //end of function data
); //end of get
});//end of click button
//to update HOS modal box
$("#records").on("click", "button#update_HOS",function()
{
$(".modal-body").empty();
var A3Code = $(this).val();
$(".records").show();
$.get(
'showCountryDetails.php',
{A3Code: A3Code},
function(data)
{
console.log(data);
var forms='';
$.each( data, function( key, value )
{
forms +='<form id="updateForm" name="updateForm" action="updateHOS.php" method="post">';
forms +='<div class="form-group">';
forms +='<input type="hidden" id="A3Code" name="A3Code" value='+value["A3Code"]+'>';
forms +='<label class="control-label">HOS:</label>';
forms +='<input type="text" class="form-control" id="hos" name="hos" value='+value['HeadOfState']+'>';
forms +='</div>';
forms += '<div class="form-group">';
forms += '<input type="submit" class="btn-success" id="updateBtn" name="updateBtn" value="Update">';
forms +='</div>';
forms +='</form>';
});
$(".modal-body").append(forms);
} //end of function data
); //end of get
});//end of click button */
//to show upload flag modal box
$("#records").on("click", "button#upload_flag",function()
{
$("#uploadModal .modal-body").empty();
var A3Code = $(this).val();
$(".records").show();
$.get(
'showCountryDetails.php',
{A3Code: A3Code},
function(data)
{
console.log(data);
var uploadForm='';
$.each( data, function( key, value )
{
uploadForm +='<form id="uploadFlagForm" name="uploadFlagForm" action="upload_flag.php" method="post" enctype="multipart/form-data">';
uploadForm +='<div class="form-group" align="center">';
uploadForm +='<input type="hidden" id="A3Code" name="A3Code" value='+value["A3Code"]+'>';
uploadForm +='<input type="file" name="fileToUpload" id="fileToUpload">';
uploadForm +='</div>';
uploadForm += '<div class="form-group" align="center">';
uploadForm += '<button type="submit" class="btn btn-primary" id="uploadBtn" name="uploadBtn">Upload Flag</button>';
uploadForm +='</div>';
uploadForm +='</form>';
});
$("#uploadModal .modal-body").append(uploadForm);
} //end of function data
); //end of get
});//end of click button
//To get country records
function getCountryRecords(id) {
$.ajax
({
url: 'showCountryInfo.php',
type: 'post',
data: {ID:id},
success:function(response)
{
var userRole = "<?php echo $userRole; ?>";
var string = "";
//string += '<input type="hidden" value="showCountryInfo" name="action"/>';
string += '<table id="tbl_countries" class="table table-bordered table-hover">';
string += '<tr>';
string += '<th>Flag</th>';
string += '<th>Country Name</th>';
string += '<th width=200px>Region</th>';
string += '<th>Surface Area</th>';
string += '<th>Population</th>';
string += '<th width=150px>Independent Year</th>';
string += '<th width=100px>City Details</th>';
if (userRole === "admin")
{
string += '<th width=100px>More Details</th>';
string += '<th width=100px>Update Details</td>';
string += '<th width=100px>Upload Flag</td>';
}
string += '</tr>';
/* from result create a string of data and append to the div */
$.each( response, function( key, value )
{
//var base64URL = "";
$("#records").empty();
string += "<tr>";
//string += "<td><img src='"+value['image']+"'/></td>";
//string += "<td><img src='data:image/png;base64, "+base64URL+"'/></td>";
string += "<td>"+"<button class='btn btn-block btn-default btn-sm' id='btnView' name='btnView' type='submit' data-id='" + value['A3Code'] + "'>View</button>" + "</td>";
//string += "<td>"+"<button class='btn btn-block btn-default btn-sm' id='btnView' name='btnView' type='submit' value='" + value['A3Code'] + "'>View</button>" + "</td>";
string += "<td>"+value['Name']+"</td>";
string += "<td>"+value['Region']+"</td>";
string += "<td>"+value['SurfaceArea']+"</td>";
string += "<td>"+value['Population']+"</td>";
string += "<td>"+value['IndepYear']+"</td>";
string += "<td>"+"<button class='btn btn-block btn-info btn-sm' data-toggle='modal' data-target='#cityModal' id='city_details' name='city_details' type='submit' value='" + value['A3Code'] + "'><span class='glyphicon glyphicon-info-sign'></button>" + "</td>";
if (userRole === "admin")
{
string += "<td>"+"<button class='btn btn-block btn-info btn-sm' data-toggle='modal' data-target='#countryModal' id='more_details' name='country_details' type='submit' value='" + value['A3Code'] + "'><span class='glyphicon glyphicon-info-sign'></button>" + "</td>";
string += "<td>"+"<button class='btn btn-block btn-default btn-sm' data-toggle='modal' data-target='#updateModal' id='update_HOS' name='update_HOS' type='submit' value='" + value['A3Code'] + "'><i class='fa fa-edit'></i></button>" + "</td>";
string += "<td>"+"<button class='btn btn-block btn-default btn-sm' data-toggle='modal' data-target='#uploadModal' id='upload_flag' name='upload_flag' type='submit' value='" + value['A3Code'] + "'><i class='fa fa-flag'></i></button>" + "</td>";
}
string += "</tr>";
});
string += '</table>';
$("#records").append(string);
}
});
}
/*$(document).on('click', '#btnView', function(){
window.location.href = "view_flag.php";
});*/
$(document).on('click', '#btnView', function(){
var value = $(this).attr('data-id');
window.location.href = "view_flag.php?A3Code=" + value;
});
/*//For view flag function
$("#btnView").on('click', function(e) {
window.location.href = "view_flag.php";
});*/
/*$("#view_flag").on("click",function()
{
window.location.href = "view_flag.php";
});*/
//For search country function
$("#search-btn").on("click", function ()
{
if(document.getElementById("search").value.length < 3)
{
alert("The characters MUST NOT be less than 3!");
return false;
}
$("#records").empty();
$(".records").empty();
$('.searchResults').empty();
var searchCountry = $("#search").val();
$.get(
'searchCountryInfo.php',
{id: searchCountry}, //left->sql id ,right->script id
function (data)
{
if (!$.trim(data)){
alert("No country with that name is found!");
return false;
}
var userRole = "<?php echo $userRole; ?>";
var string = "";
//string += '<input type="hidden" value="searchCountryInfo" name="action"/>';
string += '<table id="tbl_countries" class="table table-bordered table-hover">';
string += '<tr>';
string += '<th>Flag</th>';
string += '<th>Country Name</th>';
string += '<th width=200px>Region</th>';
string += '<th>Surface Area</th>';
string += '<th>Population</th>';
string += '<th width=150px>Independent Year</th>';
string += '<th width=100px>City Details</th>';
if (userRole === "admin")
{
string += '<th width=100px>More Details</th>';
string += '<th width=100px>Update Details</td>';
string += '<th width=100px>Upload Flag</td>';
}
string += '</tr>';
// var base64URL = getBase64(data[0]['image']);
// console.log(base64URL);
/* from result create a string of data and append to the div */
$.each( data, function( key, value )
{
$("#records").empty();
string += "<tr>";
//string += "<td>"+"<img src='data:image/png;base64,base64_encode("+value['image']+")"+"'/>"+"</td>";
//string += "<td>"+"<img src='data:image/jpeg;base64, "+base64URL+"'/></td>";
string += "<td>"+"<button class='btn btn-block btn-default btn-sm' id='btnView' name='btnView' type='submit' data-id='" + value['A3Code'] + "'>View</button>" + "</td>"; string += "<td>"+value['Name']+"</td>";
string += "<td>"+value['Region']+"</td>";
string += "<td>"+value['SurfaceArea']+"</td>";
string += "<td>"+value['Population']+"</td>";
string += "<td>"+value['IndepYear']+"</td>";
string += "<td>"+"<button class='btn btn-block btn-info btn-sm' data-toggle='modal' data-target='#cityModal' id='city_details' name='city_details' type='submit' value='" + value['A3Code'] + "'><span class='glyphicon glyphicon-info-sign'></button>" + "</td>";
if (userRole === "admin")
{
string += "<td>"+"<button class='btn btn-block btn-info btn-sm' data-toggle='modal' data-target='#countryModal' id='more_details' name='country_details' type='submit' value='" + value['A3Code'] + "'><span class='glyphicon glyphicon-info-sign'></button>" + "</td>";
string += "<td>"+"<button class='btn btn-block btn-default btn-sm' data-toggle='modal' data-target='#updateModal' id='update_HOS' name='update_HOS' type='submit' value='" + value['A3Code'] + "'><i class='fa fa-edit'></i></button>" + "</td>";
string += "<td>"+"<button class='btn btn-block btn-default btn-sm' data-toggle='modal' data-target='#uploadModal' id='upload_flag' name='upload_flag' type='submit' value='" + value['A3Code'] + "'><i class='fa fa-flag'></i></button>" + "</td>";
}
string += "</tr>";
});
string += '</table>';
$("#records").append(string);
}
);
}); // end of search function
}); //end of big function
</script>
您的帮助将不胜感激。谢谢。