我需要HTML而不是JS Controller Function中的以下数据的总和。因此,我在 ng-repeat 中使用了 ng-init 。但是我无法得到结果。

我的JSON数据是

{
   "records":[
      {
         "ldat":"2014-08-13",
         "eid":"HSL018",
         "dr":"55420",
         "cr":"0",
         "bal":"55420"
      },
      {
         "ldat":"2014-10-11",
         "eid":"HBL056",
         "dr":"0",
         "cr":"35000",
         "bal":"20420"
      },
      {
         "ldat":"2014-10-26",
         "eid":"HBL001",
         "dr":"0",
         "cr":"420",
         "bal":"20000"
      },
      {
         "ldat":"2015-11-01",
         "eid":"HDL001",
         "dr":"0",
         "cr":"20000",
         "bal":"0"
      }
   ]
}

我的HTML是
<h3>Net Balance {{ legTot }}</h3>
<table class="table table-striped table-bordered">
  <thead>
    <tr>
      <td class="text-center">#</td>
      <td class="text-center">Last Trans</td>
      <td class="text-center">Dr</td>
      <td class="text-center">Cr</td>
      <td class="text-center">Balance</td>
    </tr>
  </thead>
  <tbody>
    <tr ng-repeat="x in data | orderBy:'eid' | orderBy:orderByField:reverseSort">
      <td>{{ $index + 1 | number }}</td>
      <td class="text-center">{{ x.ldat }}</td>
      <td class="text-right">{{ x.dr | currency:"&#8377;" }}</td>
      <td class="text-right">{{ x.cr | currency:"&#8377;" }}</td>
      <td class="text-right" ng-init="legTot = legTot + x.bal | number">{{ x.bal | currency:"&#8377;" }}</td>
    </tr>
  </tbody>
</table>

在这里,我使用ng-init="legTot = legTot + x.bal | number"求和了余额legTot是一个范围变量。

我无法获得总数。请帮助我如何在AngularJS Controller 函数中不使用foreach循环的情况下实现此目标。

最佳答案

ng-init创建新的子范围。若要将范围变量从父级继承到子级,应将这些变量放入对象。在 Controller 的作用域中,创建名称为“vm”的对象,并将“legTot”变量放入其中。

$scope.vm = {legTot: 0}

并更改html
<h3>Net Balance {{ vm.legTot }}</h3>
<table class="table table-striped table-bordered">
  <thead>
    <tr>
      <td class="text-center">#</td>
      <td class="text-center">Last Trans</td>
      <td class="text-center">Dr</td>
      <td class="text-center">Cr</td>
      <td class="text-center">Balance</td>
    </tr>
  </thead>
  <tbody>
    <tr ng-repeat="x in data | orderBy:'eid' | orderBy:orderByField:reverseSort">
      <td>{{ $index + 1 | number }}</td>
      <td class="text-center">{{ x.ldat }}</td>
      <td class="text-right">{{ x.dr | currency:"&#8377;" }}</td>
      <td class="text-right">{{ x.cr | currency:"&#8377;" }}</td>
      <td class="text-right" ng-init="vm.legTot = vm.legTot + Number(x.bal)">{{ x.bal | currency:"&#8377;" }}</td>
    </tr>
  </tbody>
</table>

07-26 09:29