Angularjs：选中/取消选中类别和列表项的复选框

时间：2019-06-12 11:06:16

标签： javascript angularjs checkbox checkboxlist

我已经列出了我要具有选中/取消选中功能的类别和列表项。在点击类别的地方，还应该选中所有子复选框。我有一个列表（JSON中的特权），其中某些项目具有相同的类别，如下所示；

我在plunkr中有示例代码-https://next.plnkr.co/edit/au1XPEjj7MuP77gc

我有如下的JSON代码。 

var list = [{
      "uuid": "0023",
      "title": "AM_FULL_ACCESS",
      "displayName": "Application monitoring Full access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Application Monitoring"
    },
    {
      "uuid": "0025",
      "title": "CM_FULL_ACCESS",
      "displayName": "Client management Full access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Client Management"
    },
    {
      "uuid": "0031",
      "title": "COMPLIANCE_FULL_ACCESS",
      "displayName": "Compliance Full access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Compliance"
    },
    {
      "uuid": "0054",
      "title": "FAILED_APPLICATION_ACCESS",
      "displayName": "Failed application access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Compliance"
    },
    {
      "uuid": "0068",
      "title": "FUND_TRANSFER",
      "displayName": "Fund Transfer",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Funds"
    },
    {
      "uuid": "0067",
      "title": "FUND_LOADING",
      "displayName": "Fund Loading",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Funds"
    },
    {
      "uuid": "0066",
      "title": "FUND_LOADING_TRANSFER",
      "displayName": "Fund Loading and transfer",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Funds"
    }
];

要将每个列表项置于特定类别下，我遍历了JSON，并使用ng-if指令对其进行了过滤，以显示具有相同类别的特定列表项。

此处视图（HTML代码） 

<label>
    <input type="checkbox" id="" ng-model="IsAllChecked" ng-change="CheckUncheckAll()"> 
    <span class="ml-1">Application Monitoring</span>
</label>
<ul class="list-unstyled">
    <li ng-repeat="pr in privilegesList track by $index" ng-if="pr.category === 'Application Monitoring'">
        <label class="control-label">
            <input id="pr.title" type="checkbox" ng-model="pr.isActive" ng-change="CheckUncheckHeader()">
            <span>{{pr.displayName}}</span>
        </label>
    </li>
</ul>

<label>
    <input type="checkbox" id="" ng-model="IsAllChecked" ng-change="CheckUncheckAll()"> 
    <span class="ml-1">Client Management</span>
</label>
<ul class="list-unstyled">
    <li ng-repeat="pr in privilegesList track by $index" ng-if="pr.category === 'Client Management'">
        <label class="control-label">
            <input id="pr.title" type="checkbox" ng-model="pr.isActive" ng-change="CheckUncheckHeader()">
            <span>{{pr.displayName}}</span>
        </label>
    </li>
</ul>

<label>
    <input type="checkbox" id="" ng-model="IsAllChecked" ng-change="CheckUncheckAll()"> 
    <span class="ml-1">Compliance</span>
</label>
<ul class="list-unstyled">
    <li ng-repeat="pr in privilegesList track by $index" ng-if="pr.category === 'Compliance'">
        <label class="control-label">
            <input id="pr.title" type="checkbox" ng-model="pr.isActive" ng-change="CheckUncheckHeader()">
            <span>{{pr.displayName}}</span>
        </label>
    </li>
</ul>

<label>
    <input type="checkbox" id="" ng-model="IsAllChecked" ng-change="CheckUncheckAll()"> 
    <span class="ml-1">Funds</span>
</label>
<ul class="list-unstyled">
    <li ng-repeat="pr in privilegesList track by $index" ng-if="pr.category === 'Funds'">
        <label class="control-label">
            <input id="pr.title" type="checkbox" ng-model="pr.isActive" ng-change="CheckUncheckHeader()">
            <span>{{pr.displayName}}</span>
        </label>
    </li>
</ul>

执行ng-if似乎效果很好，但我想使用更好的解决方案（如果有的话）。我也想为所有类别及其各自的子项添加“检查/取消选中”功能。因此，如果我选择任何类别，则所有子复选框也将被选中。并且，如果未选中任何/所有项目复选框，则应取消选中父复选框。

我正在遵循JS代码，该代码似乎可以选中/取消选中所有代码。我可以针对特定类别执行此操作，但是我想拥有针对所有类别及其子复选框执行此操作的脚本。

1 个答案:

答案 0 :(得分：0)

也许此脚本有用。

angular.module('someApp', [])
  .controller('someController', function someController($scope) {
    $scope.getCategories = getCategories;
    $scope.getPrivilegesByCategory = getPrivilegesByCategory;
    $scope.selectCategory = selectCategory;
    $scope.checkCategory = checkCategory;
    $scope.privileges = getCategories().reduce(
      function(acc, category, index) {
        acc.push({
          category: category,
          data: getPrivilegesByCategory(category)
        });
        return acc;
      }, []);
  });

angular.bootstrap(
  document.body, ['someApp']
);

function getCategories() {
  var categories = privilegesService().reduce(
    function(acc, privilege) {
      if (acc.indexOf(privilege.category) === -1) {
        acc.push(privilege.category);
      }
      return acc;
    }, []);
  return categories;
}

function getPrivilegesByCategory(category) {
  var privileges = privilegesService().filter(
    function(privilege) {
      return privilege.category === category;
    });
  return privileges;
}

function selectCategory(item) {
  checkCategory(item);
  item.data.forEach(function(privilege) {
    privilege.isActive = !item.isActive;
  });
}

function checkCategory(item) {
  var res = item.data.filter(function(privilege) {
    return privilege.isActive !== true;
  });
  item.isActive = res.length === 0;
}

function privilegesService() {
  return [{
      "uuid": "0023",
      "title": "AM_FULL_ACCESS",
      "displayName": "Application monitoring Full access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Application Monitoring"
    },
    {
      "uuid": "0025",
      "title": "CM_FULL_ACCESS",
      "displayName": "Client management Full access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Client Management"
    },
    {
      "uuid": "0031",
      "title": "COMPLIANCE_FULL_ACCESS",
      "displayName": "Compliance Full access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Compliance"
    },
    {
      "uuid": "0054",
      "title": "FAILED_APPLICATION_ACCESS",
      "displayName": "Failed application access",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Compliance"
    },
    {
      "uuid": "0068",
      "title": "FUND_TRANSFER",
      "displayName": "Fund Transfer",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Funds"
    },
    {
      "uuid": "0067",
      "title": "FUND_LOADING",
      "displayName": "Fund Loading",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Funds"
    },
    {
      "uuid": "0066",
      "title": "FUND_LOADING_TRANSFER",
      "displayName": "Fund Loading and transfer",
      "status": "ACTIVE",
      "type": "ADMIN",
      "category": "Funds"
    }
  ];
}
<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>

<div ng-controller="someController">
  <div ng-repeat="item in privileges">
    <label class="h5 mb-2">
        <input type="checkbox" ng-click="selectCategory(item)" ng-model="item.isActive"> 
        <span class="ml-1" ng-bind="item.category"></span>
    </label>
    <ul class="list-unstyled ml-4">
      <li ng-repeat="pr in item.data track by $index">
        <label class="control-label">
                <input type="checkbox" ng-model="pr.isActive" ng-change="checkCategory(item)">
                <span ng-bind="pr.displayName"></span>
            </label>
      </li>
    </ul>
  </div>
</div>

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