您如何存储总计,并在每次用户点击提交时累计?
例如,每当用户提交信息时,Cumulative Total = #
就会合计第3列的总数。
<body ng-app="Test">
<section style="margin-top:80px">
<h3>Plastic Calculator Form</h3>
<div ng-controller="TestController as test" >
<p>To date, <strong><u># of people who pledged</u></strong> Earthlings have pledged to reduce their single-use plastic waste from <strong><u>{{ test.approve | sumByColumn: 'amount' }}</u></strong> Items per year to <strong><u>{{(test.approve | sumByColumn: 'amount') - (test.approve | sumByColumn4: 'reducedTotal')}}</u></strong>. That's a reduction of <strong><u>{{ test.approve | sumByColumn4: 'reducedTotal' }}</u></strong> per year! Do your part. Make a pledge!</p>
<table class="table">
<tr>
<th>Single-Use Plastic Items</th>
<th>Enter the Number You Use Per Week</th>
<th>The Number You Use Per Year is:</th>
<th>How Many Less Can You Use Per Week?</th>
<th>Your Reduced Usage Per Year Would Be:</th>
</tr>
<tr ng-repeat="x in test.approve">
<td> {{ x.name }} </td>
<td> <input class="qty form-control" type="number" ng-model="x.number" ng-change="sumByColumn3()" min="0" restrict-to="[0-9]"/> </td>
<td> {{ x.number*x.amount }} </td>
<td> <input class="qty form-control" type="number" ng-model="x.reducedAmount" ng-change="sumByColumn2()" min="0" restrict-to="[0-9]"/> </td>
<td> {{ x.reducedAmount*x.reducedTotal }} </td>
</tr>
<tr>
<td>TOTALS</td>
<td>{{ test.approve | sumByColumn3: 'number' }}</td>
<td>{{ test.approve | sumByColumn: 'amount' }}</td>
<td>{{ test.approve | sumByColumn2: 'reducedAmount' }}</td>
<td>{{ test.approve | sumByColumn4: 'reducedTotal' }}</td>
</tr>
<tr>
<td colspan="2">Total difference = {{(test.approve | sumByColumn: 'amount') - (test.approve | sumByColumn4: 'reducedTotal')}}</td>
<td colspan="3">
<strong>Cumulative Total = #</strong>
</td>
</tr>
</table>
<form>
<div class="col-sm-4">
<div class="form-group">
<label for="full-name">Name</label>
<input type="text" class="form-control" id="full-name" placeholder="Enter Full Name">
</div>
</div>
<div class="col-sm-4">
<div class="form-group">
<label for="email-address">Email</label>
<input type="email" class="form-control" id="email-address" aria-describedby="emailHelp" placeholder="Enter email">
</div>
</div>
<div class="col-sm-4">
<button type="submit" class="btn btn-primary" style="margin-top:25px">Submit</button>
</div>
</form>
</div>
</section>
</body>
Link to Pen
我不确定是否最好使用
window.localStorage
或sessionStorage
或最好使用PHP。我现在正在尝试。您的帮助将是黄金。
最佳答案
我不确定是否最好与window.localStorage或
sessionStorage或使用PHP完成。我正在尝试
现在。
弄清楚这一点很简单。方法如下:
1.)这些数字(总和)与后端数据有什么关系吗?您需要某种服务器代码或功能来执行此操作吗?如果是,请使用php。
2.)如果1对您来说是错误的,您是否希望用户再次回来时能够重新获得数字或总和?您想要它持久吗?然后使用:localStorage
3.)如果2为假,请使用sessionStorage。它不是持久性的,并在当前会话终止后立即清除。即:用户关闭选项卡或浏览器。
现在,如果您需要代码方面的帮助,请修改您的问题以包括这些详细信息,或者打开一个新问题,或者只是对我的答案发表评论。我会尽力帮助您。编码愉快!
关于javascript - 存储总数,并在提交时累计,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/57168160/