月度归档： 2018 年 12 月

html

<input type="text" ng-model="person.name"/>
  <div ng-controller="FirstCtrl">
  {{person.name}}
  <button ng-click="setName()">set name to jack</button>
  </div>
  <div ng-controller="SecondCtrl">
  {{person.name}}
  <button ng-click="setName()">set name to jack</button>
  </div>
</div>

js

var myApp = angular.module("myApp", []);
myApp.factory('Data', function() {
  return {
    name: "Ting"
  }
});
myApp.controller('FirstCtrl', function($scope, Data) {
  $scope.data = Data;

  $scope.setName = function() {
    Data.name = "Jack";
  }
});

myApp.controller('SecondCtrl', function($scope, Data) {
  $scope.data = Data;

  $scope.setName = function() {
    Data.name = "Moby";
  }
});

方案一

html

<label ng-repeat="fruitName in fruits">
  <input
    type="checkbox"
    name="selectedFruits[]"
    value="{{fruitName}}"
    ng-checked="selection.indexOf(fruitName) > -1"
    ng-click="toggleSelection(fruitName)"
  > {{fruitName}}
</label>

js

app.controller('SimpleArrayCtrl', ['$scope', function SimpleArrayCtrl($scope) {
  // fruits
  $scope.fruits = ['apple', 'orange', 'pear', 'naartjie'];

  // selected fruits
  $scope.selection = ['apple', 'pear'];

  // toggle selection for a given fruit by name
  $scope.toggleSelection = function toggleSelection(fruitName) {
    var idx = $scope.selection.indexOf(fruitName);

    // is currently selected
    if (idx > -1) {
      $scope.selection.splice(idx, 1);
    }

    // is newly selected
    else {
      $scope.selection.push(fruitName);
    }
  };
}]);

方案二

html

<label ng-repeat="fruit in fruits">
  <!--
    - use `value="{{fruit.name}}"` to give the input a real value, in case the form gets submitted
      traditionally

    - use `ng-checked="fruit.selected"` to have the checkbox checked based on some angular expression
      (no two-way-data-binding)

    - use `ng-model="fruit.selected"` to utilize two-way-data-binding. Note that `.selected`
      is arbitrary. The property name could be anything and will be created on the object if not present.
  -->
  <input
    type="checkbox"
    name="selectedFruits[]"
    value="{{fruit.name}}"
    ng-model="fruit.selected"
  > {{fruit.name}}
</label>

js

app.controller('ObjectArrayCtrl', ['$scope', 'filterFilter', function ObjectArrayCtrl($scope, filterFilter) {
  // fruits
  $scope.fruits = [
    { name: 'apple',    selected: true },
    { name: 'orange',   selected: false },
    { name: 'pear',     selected: true },
    { name: 'naartjie', selected: false }
  ];

  // selected fruits
  $scope.selection = [];

  // helper method to get selected fruits
  $scope.selectedFruits = function selectedFruits() {
    return filterFilter($scope.fruits, { selected: true });
  };

  // watch fruits for changes
  $scope.$watch('fruits|filter:{selected:true}', function (nv) {
    $scope.selection = nv.map(function (fruit) {
      return fruit.name;
    });
  }, true);
}]);