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我目前正在開發一個計算用戶GPA的移動應用程序。我想添加的一個功能是通過緩存數據或其他類似方法保存輸入數據的功能。是否可以通過存儲數據的保存按鈕保存所有輸入，包括下拉響應？或者類似的東西？JQuery表單緩存文件
var $oBox = $('.outer-box');
var $gpa = $('#gpa');
var $result = $('.result').hide();
$('#btnAddClass').click(function() {
$('.block').last().clone().children().val("").parent().appendTo($('.inner-box'));
$('html, body').animate({
scrollTop: $(document).height()
}, 'slow');
return false;
});
$oBox.on('keyup', '.credits', function() {
$gpa.text(getTotal());
});
$oBox.on("change", ".grade-select", function() {
});
function getTotal() {
var gradeTotal = 0;
var sum = 0;
$(".credits").each(function() {
var $this = $(this);
if (!isNaN($this.val()) && !isNaN($this.parent().find('.grade-select').val())) {
sum += parseFloat($this.val() || 0) * parseFloat($this.parent().find('.grade-select').val() || 0);
gradeTotal += parseFloat($this.val() || 0)
}
});
return (sum/gradeTotal).toFixed(2);
}
$("#Calculate").on("click", function() {
$gpa.text(getTotal());
$result.is(":hidden") && $result.show();
$('html, body').animate({
scrollTop: $(document).height()
}, 'slow');
return false;
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<link rel='stylesheet prefetch' href="http://maltertech.com/bootstrap.min.css">
<head>
<style>
body {
background-color: #A00000;
background-size: cover;
margin: 0;
padding: 0;
}
.outer-box {
height: true;
width: 250px;
padding: 10px;
margin: 20px auto 20px auto;
border-radius: 10px;
background-color: white;
}
.block {
margin: 5px;
}
.class {
border: 1px solid black;
border-radius: 5px;
width: 200px;
height: 35px;
margin: 5px;
padding: 5px;
}
.credits {
border: 1px solid black;
border-radius: 5px;
width: 95px;
height: 35px;
margin: 5px;
padding: 5px;
}
.grade-select {
border: 1px solid black;
border-radius: 5px;
width: 95px;
height: 35px;
margin: 5px;
padding: 5px;
}
.btn {
border: 2px solid black;
border-radius: 5px;
width: 100px;
height: 35px;
margin: 10px;
padding: 5px;
font-weight: bold;
text-align: center;
}
#Calculate {
width: 200px;
border: 3px solid black;
}
.result {
border: 3px solid black;
border-radius: 5px;
width: 200px;
height: 100px;
margin: 20px auto 20px auto;
padding: 5px;
font-weight: bold;
text-align: center;
}
#gpa {
font-size: 4rem;
color: black;
font-weight: bold;
}
</style>
<meta charset="UTF-8">
<title>GPA Calculator</title>
<meta content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0' name='viewport' />
<link rel='stylesheet prefetch' href='css/bootstrap.min.css'>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<center>
<div class='outer-box'>
<div class='inner-box'>
<form class='block'>
<table>
<tr>
<input type="text" class='class' placeholder="Class">
</tr>
<br>
<tr>
<select class='credits'>
<option value="">Credits</option>
<option value="0.5">Half Year</option>
<option value="1">Full Year</option>
</select>
<select class='grade-select'>
<option value="">Grade</option>
<option value="4.6">A+</option>
<option value="4.0">A</option>
<option value="3.6">B+</option>
<option value="3.0">B</option>
<option value="2.6">C+</option>
<option value="2.0">C</option>
<option value="1.0">D</option>
<option value="0.0">F</option>
</select>
</tr>
</table>
</form>
</div>
<div id='btnAddClass' class='btn btn-default'>Add Class</div>
<br>
<button id="Calculate" class='btn btn-default' >Calculate</button>
<div class='result'>
<h3 id="gpa">GPA</h3>
</div>
</div>
</center>
<script src='js/jquery.min.js'></script>
<script src="js/index.js"></script>
</body>
</html>
你想要保存數據多久（無限期地，直到用戶關閉應用程序等）？這是一個移動應用程序作爲本地應用程序在瀏覽器或混合應用程序框架中運行嗎？ –
無限期地點擊重置緩存按鈕。作爲本地應用程序運行在混合應用程序框架中@ J.Titus – Zachmalter