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main.html
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<html>
<head>
<title>导师评价</title>
<link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<style>
</style>
</head>
<body>
<h1 class="mt-3 mb-5 text-center">导师评价信息</h1>
<div class="container mt-3">
<div class="row">
<div class="col col-4">
<div class="input-group mb-3">
<div class="input-group-prepend">
<label class="input-group-text" for="schoolcateSelector">选择学校类别</label>
</div>
<select class="custom-select" id="schoolcateSelector">
<option selected>选择学校类别</option>
</select>
</div>
</div>
<div class="col col-4">
<div class="input-group mb-3">
<div class="input-group-prepend">
<label class="input-group-text" for="universitySelector">选择学校</label>
</div>
<select class="custom-select" id="universitySelector">
<option selected>选择所在学校</option>
</select>
</div>
</div>
<div class="col col-4">
<div class="input-group mb-3">
<div class="input-group-prepend">
<label class="input-group-text" for="departmentSelector">选择院系</label>
</div>
<select class="custom-select" id="departmentSelector">
<option selected>选择所在院系</option>
</select>
</div>
</div>
</div>
<div class="row">
<div class="col col-6">
<div class="input-group mb-3">
<div class="input-group-prepend">
<label class="input-group-text" for="supervisorSelector">选择导师</label>
</div>
<select class="custom-select" id="supervisorSelector">
<option selected>选择姓名</option>
</select>
</div>
</div>
<div class="col col-6 mb-3 text-center">
<button type="button" class="btn btn-primary" style="width: 90%;" id="confirmBtn">确认</button>
</div>
</div>
<div class="descriptions">
</div>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.2/js/bootstrap.min.js"></script>
<script src="data.js"></script>
<script>
function getValuesInObjs(arr, key) {
var resultArr = new Array();
arr.forEach(function (obj) {
if (!resultArr.includes(obj[key])) {
resultArr.push(obj[key]);
}
});
return resultArr.sort(function (item1, item2) {
return item1.localeCompare(item2, 'zh');
});
}
function filterValuesInArray(arr, key, value) {
var resultArr = new Array();
arr.forEach(function (obj) {
if (obj[key] == value) {
resultArr.push(obj);
}
});
return resultArr;
}
function setSelectOptions(selector, options) {
selector.empty();
options.forEach(function (value, i) {
var option = new Option(value, i);
selector.append($(option));
//option.selected = true;
});
}
var schoolcate = $('#schoolcateSelector');
var university = $('#universitySelector');
var department = $('#departmentSelector');
var supervisor = $('#supervisorSelector');
var confirmBtn = $('#confirmBtn');
var contentDiv = $('.descriptions');
var schoolcates = getValuesInObjs(data, 'school_cate')
var universities = new Array();
var departments = new Array();
var supervisors = new Array();
var currentCt = '';
var currentUn = '';
var currentDp = '';
var currentSp = '';
schoolcate.change(function () {
currentCt = schoolcates[schoolcate.val()];
var thisData = filterValuesInArray(data, 'school_cate', currentCt);
universities = getValuesInObjs(thisData, 'university');
setSelectOptions(university, universities);
university.trigger('change');
});
university.change(function () {
currentUn = universities[university.val()];
var thisData = filterValuesInArray(data, 'university', currentUn);
departments = getValuesInObjs(thisData, 'department');
setSelectOptions(department, departments);
department.trigger('change');
});
department.change(function () {
currentDp = departments[department.val()];
var thisData = filterValuesInArray(data, 'university', currentUn);
thisData = filterValuesInArray(thisData, 'department', currentDp);
supervisors = getValuesInObjs(thisData, 'supervisor');
setSelectOptions(supervisor, supervisors);
supervisor.trigger('change');
})
supervisor.change(function () {
currentSp = supervisors[supervisor.val()];
})
confirmBtn.click(function () {
var thisData = filterValuesInArray(data, 'university', currentUn);
thisData = filterValuesInArray(thisData, 'department', currentDp);
thisData = filterValuesInArray(thisData, 'supervisor', currentSp);
contentDiv.empty();
thisData.forEach(function (value, i) {
var desc = value['description'];
var rate = value['rate']
var card = $(`<div class="card mb-3">
<h5 class="card-header" >${currentUn}${currentDp}</h5 >
<div class="card-body">
<h3 class="card-title">${currentSp}</h3>
<p class="card-text">评分：${rate}</p>
<p class="card-text">${desc}</p>
</div></div >`);
contentDiv.append($(card));
})
});
setSelectOptions(schoolcate, schoolcates);
schoolcate.trigger('change');
</script>
</body>
</html>