//This is the html page
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div id="container">
<select id="officeType">
<option value="">OfficeList</option>
<option value="ministryDiv">Ministry</option>
<option value="divisionBatayon">Division</option>
</select>
<select id="ministryList"></select>
</div>
<script>
var $select = $('#ministryList');
$.getJSON('all-ministry-list.JSON',function(value){
$select.html('');
for(var i=0;i<value['data'].length;i++){
$select.append('<option id="' +value['data'][i]['id'] +'">' +value['data'][i]['sitename_bn'] +'</option>');
}
});
</script>
</body>
</html>
//这是all-ministry-list.JSON文件
{
"data": [
{
"id": "6484",
"subdomain": "mohpw.portal.gov.bd",
"sitename_en": "Ministry of Housing and Public Works",
"sitename_bn": "গৃহায়ণ ও গণপূর্ত মন্ত্রণালয়",
"weight": "99999"
},
{
"id": "6487",
"subdomain": "minland.portal.gov.bd",
"sitename_en": "Ministry Of Land",
"sitename_bn": "ভূমি মন্ত্রণালয়",
"weight": "99999"
}
]
}
//this is the ministry-child-list.JSON file
{
"data": [
{
"id": "6209",
"subdomain": "beza.portal.gov.bd",
"sitename_en": "Bangladesh Economic Zones Authority",
"sitename_bn": "বাংলাদেশ অর্থনৈতিক অঞ্চল কর্তৃপক্ষ",
"weight": "99999"
},
{
"id": "6218",
"subdomain": "ngoab.portal.gov.bd",
"sitename_en": "NGO Affairs Bureau",
"sitename_bn": "এনজিও বিষয়ক ব্যুরো",
"weight": "99999"
},
{
"id": "6558",
"subdomain": "bida.portal.gov.bd",
"sitename_en": "Bangladesh Investment Development Authority (BIDA)",
"sitename_bn": "বাংলাদেশ বিনিয়োগ উন্নয়ন কর্তৃপক্ষ",
"weight": "99999"
}
]
}
这里有两个下拉菜单。在第一个下拉菜单中,我手动给出了option的值。在第二个下拉菜单中,我从json文件中获得了option的值。现在我想将这两个下拉列表连接在一起。我想在第二个下拉列表ministryList中看到json文件all-ministry-list.json的值,当我单击Division时,我想在第二个下拉列表ministryList中看到json文件ministry-child-list.json的值。连接这两个表?plz帮助