我有几个动态复选框组(ul> li>复选框> ul> li>复选框),如果未选中子项,则需要更改父级的检查状态,或者如果仅选中一个子项则需要更改不确定状态。如果未选中父级,但是需要将每个组绑定在一起但是与其他组分开,我已经取消了检查孩子的工作。孩子正在取消选中组列表中的顶级父项。
HTML
<div class="form-group">
<ul>
<li ng-repeat="state in filtersController.filtersModel().states">
<input type="checkbox" name="{{state.displayName}}" id="{{state.displayName}}" class="parent" ng-checked="true" ng-model="state.selected" ng-change="filtersController.filterChanged(state)">
<label for="{{state.displayName}}">{{state.displayName}}</label>
<ul>
<li ng-repeat="county in filtersController.filtersModel().counties">
<div ng-show="displayCounties(county, state)">
<input type="checkbox" name="{{county.displayName}}" id="{{county.displayName}}" class="child" ng-checked="true" ng-model="county.selected" ng-change="filtersController.filterChanged(county)">
<label for="{{county.displayName}}">{{county.displayName}}</label>
</div>
</li>
</ul>
</li>
</ul>
</div>
JS
this.getChecked = function () {
$('input[type=checkbox]').change(function () {
// parent unchecked will uncheck children
$(this).parent().find('li input[type=checkbox]').prop('checked', $(this).is(':checked'));
$(this).closest('ul').find('ul li input[type=checkbox][class=parent]').first().prop('indeterminate', $(this).is(':checked'));
});
$('li :checkbox').on('click', function () {
var $chk = $(this),
$li = $chk.closest('li'),
$ul, $parent;
if ($li.has('ul')) {
$li.find(':checkbox').not(this).prop('checked', this.checked);
}
do {
$ul = $li.parent();
$parent = $ul.siblings(':checkbox');
if ($chk.is(':checked')) {
$parent.prop('checked', $ul.has(':checkbox:not(:checked)').length === 0);
} else {
$parent.prop('checked', false);
}
$chk = $parent;
$li = $chk.closest('li');
} while ($ul.is(':not(.someclass)'));
});
};
我使用AngularJS作为我的数据结构,使用jQuery与复选框进行交互。
答案 0 :(得分:0)
一旦您开始考虑首先使用数据模型,您将看到仅使用角度更容易。
简化的HTML
<!-- note ng-checked and ng-model don't go together -->
<input type="checkbox" ng-model="state.selected"
ng-change="filtersController.parentChange('state',state)">
<ul>
<li ng-repeat="county in filtersController.counties">
<input type="checkbox" ng-model="county.selected"
ng-change="filtersController.childChanged('counties')">
<label for="{{county.displayName}}">{{county.displayName}}</label>
</li>
</ul>
控制器(未经测试)
var vm = this;
vm.parentChange = parentChange;
vm.childChanged = childChanged;
function parentChange(type, parent) {
var children
if (type === 'state') {
children = vm.counties;
}
// when parent changes ... all children get same state as parent
children.forEach(function(item) {
item.selected = parent.selected
});
}
function childChanged(type) {
var parent, childGroup, allChecked;
if (type === 'counties') {
parent = vm.state;
childGroup = vm.counties;
// when child changes see if any are left unchecked in group
allChecked = !childGroup.filter(function(item) {
return !item.selected
}).length;
// parent dependent on all children checked or not
parent.selected = allChecked;
}
}
控制器关心DOM的最终结果是什么,DOM由控制器中的数据模型驱动