Question

当用户使用复选框选项选择行时，点击“计算折旧”，我想抓取{{asset.purchaseValue}}，{{asset.residualValue}}，{{asset.purchaseDate}}中的值和{{asset.ddate}}执行计算以发回给用户。如何在jQuery，AngularJS或vanilla Javascript中获取这些值？

 <table align="center" class="assetlist">
    <thead>
        <tr>
            <th width="45px">
                <select ng-model="sortBy" class="localSearch">
                    <option value="title">Title</option>
                    <option value="ddate">Disposal Date</option>
                    <option value="date">Purchase Date</option>
                    <option value="residualValue">Residual Value</option>
                    <option value="purchaseValue">Purchase Value</option>
                </select>
            </th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Title" ng-model="searchString.title" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Purchase Date" ng-model="searchString.date" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Purchase Value" ng-model="searchString.purchaseValue" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Disposal Date" ng-model="searchString.ddate" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Residual Value" ng-model="searchString.residualValue" /></th>
        </tr>
    </thead>
    <tbody>
        <tr ng-repeat="asset in assets | orderBy:sortBy | filter:searchString : searchStrict | limitTo: rowLimit">
            <td><input type="checkbox" ng-model="checked"/></td>
            <td>{{asset.title}}</td>
            <td>{{asset.date | date: "MMMM d, y"}}</td>
            <td>{{asset.purchaseValue | currency:"£"}}</td>
            <td>{{asset.ddate | date: "MMMM d, y"}}</td>
            <td>{{asset.residualValue | currency:"£"}}</td>
        </tr>
    </tbody>
</table>
    <button class="formbtn" ng-disabled="!checked">Calculate Depreciation</button>

Answer 1

当用户选中该框时，将该行传入：

HTML：

<input type="checkbox" ng-model="checked" ng-checked="evaluate(asset)"/>

JavaScript的：

$scope.evaluate = function(asset) {
  //var purchaseValue = asset.purchaseValue
  //var residualValue = asset.residualValue
  //var purchaseDate = asset.purchaseDate
  //var ddate = asset.ddate

  //do calculations
}

Answer 2

以下是所需输出的修改代码:(复制并试用！）

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
        var purchaseValue,residualValue,life=1;
$(".ckb").on('click',function(){
var checked=$(this).is(':checked');

if(checked){
//checkbox checked
var tr=$(this).parent().parent().parent();
var titlevalue=tr.find('td:eq(1)').html();
 purchaseValue=tr.find('td:eq(3)').html();
 residualValue=tr.find('td:eq(5)').html();
}else{
//checkbox unchecked
}
});


 $("#calculateId").on('click',function(){

 if(residualValue==undefined&&residualValue==undefined){
 alert('please select the checkbox');
 }else{
// alert(purchaseValue);
 //alert(residualValue);
  var result=((parseInt(purchaseValue)-parseInt(residualValue)) /life);
alert('result:'+result);
 }

});


});
</script>
</head>
<body>
<table align="center" class="assetlist">
    <thead>
        <tr>
            <th width="45px">
                <select ng-model="sortBy" class="localSearch">
                    <option value="title"> Title</option>
                    <option value="ddate"> Disposal Date</option>
                    <option value="date"> Purchase Date</option>
                    <option value="residualValue">residualValue</option>
                    <option value="purchaseValue">purchaseValue</option>
                </select>
            </th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Title" ng-model="searchString.title" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Purchase Date" ng-model="searchString.date" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Purchase Value" ng-model="searchString.purchaseValue" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Disposal Date" ng-model="searchString.ddate" /></th>
            <th class="thead" ng-hide="hide"><input type="text" class="localSearch" placeholder="Residual Value" ng-model="searchString.residualValue" /></th>
        </tr>
    </thead>
    <tbody>
        <tr ng-repeat="asset in assets | orderBy:sortBy | filter:searchString : searchStrict | limitTo: rowLimit">
            <td><input type="checkbox" class="ckb" ng-model="checked"/></td>
            <td>title1</td>
            <td>date1</td>
            <td>20</td>
            <td>ddate1</td>
            <td>10</td>
        </tr>
    </tbody>
</table>

</form>

  <button class="formbtn" ng-disabled="!checked" id="calculateId">Calculate Depreciation</button>

</body>
</html>

Answer 3

由于有多个资源，您应该在selected ng-model="asset.selected"上为该资产绑定新的<td>属性为true（或切换） >

<tr ng-repeat="asset in assets | orderBy:sortBy | filter:searchString : searchStrict | limitTo: rowLimit">
  <td><input type="checkbox" ng-model="asset.selected" /></td>
  <td>{{asset.title}}</td>
  <td>{{asset.date | date: "MMMM d, y"}}</td>
  <td>{{asset.purchaseValue | currency:"£"}}</td>
  <td>{{asset.ddate | date: "MMMM d, y"}}</td>
  <td>{{asset.residualValue | currency:"£"}}</td>
</tr>

<button class="formbtn" ng-click="calculateDep()">Calculate Depreciation</button>

在控制器中，

//For Calculation
$scope.calculateDep = function() {
  angular.forEach($scope.assets, function(asset) {
    if (asset.selected) { 
      //Here are asset.purchaseValue,asset.residualValue ...
      //perform calculation individually for an asset
      //or send the enitire selected assets for calculation by creating a new scope array for selected ones
    }
  })
}

<强>更新

请参阅下面的代码段，当您选择一个或多个复选框并计算dep时，您可以在控制台中看到整个对象。

angular.module("app", []).controller("ctrl", function($scope) {

  $scope.assets = [{
    title: 'Asset1',
    date: '',
    purchaseValue: 500,
    ddate: '',
    residualValue: 100
  }, {
    title: 'Asset2',
    date: '',
    purchaseValue: 500,
    ddate: '',
    residualValue: 100
  }];


  //For Calculation
  $scope.calculateDep = function() {
  console.clear();
    angular.forEach($scope.assets, function(asset) {
      if (asset.selected) {
         console.log(asset);
      }
    })
  }

});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>

<body ng-app="app" ng-controller="ctrl">

<table>
 <tr ng-repeat="asset in assets track by $index">
    <td><input type="checkbox" ng-model="asset.selected" /></td>
    <td>{{asset.title}}</td>
    <td>{{asset.date}}</td>
    <td>{{asset.purchaseValue}}</td>
    <td>{{asset.ddate}}</td>
    <td>{{asset.residualValue}}</td>
  </tr>
</table>
  <button class="formbtn" ng-click="calculateDep()">Calculate Depreciation</button>
</body>

如何从选定的表行中获取值？

3 个答案: