Javascript ng重复作用域的奇怪行为
我有一段HTML:Javascript ng重复作用域的奇怪行为,javascript,angularjs,angularjs-ng-repeat,ng-repeat,Javascript,Angularjs,Angularjs Ng Repeat,Ng Repeat,我有一段HTML: <div ng-switch="view"> <div ng-switch-when="products"> <input class="form-control" placeholder="Search" ng-model="searchText" /> <ul ng-show="products && products.length > 0">
<div ng-switch="view">
<div ng-switch-when="products">
<input class="form-control" placeholder="Search" ng-model="searchText" />
<ul ng-show="products && products.length > 0">
<li class="head">
<div class="column col-select"><input type="checkbox" ng-model="$parent.allSelected" ng-change="$parent.selectAll($parent.allSelected)" /></div>
<div class="column col-name">Name</div>
<div class="column col-code">Code</div>
<div class="column col-stock">Stock</div>
<div class="column col-code">Price</div>
<div class="column col-buttons"></div>
</li>
<li ng-repeat="p in ($parent.shownProducts = (products | filter: searchText))">
<div class="column col-select"><input type="checkbox" ng-model="p.selected" ng-change="select(p.selected)" /></div>
<div class="column col-name">{{ p.name }}</div>
<div class="column col-code">{{ p.code }}</div>
<div class="column col-stock">{{ p.stock }}</div>
<div class="column col-code">{{ p.price | currency: '$' : 2 }}</div>
<div class="column col-buttons">
<button class="btn btn-edit" ng-click="goTo('edit', $index)"><i class="fa fa-pencil"></i></button>
<button class="btn btn-delete" ng-click="goTo('delete', $index)"><i class="fa fa-trash"></i></button>
</div>
</li>
</ul>
</div>
</div>
这段代码可以工作,但是:
- 标头(li.head)必须使用$parent scope才能访问$scope服务 否则,即使设置了初始值,模型也不会更新 没错李>
- Ng repeat作用域不使用$parent,但可以正常工作
$scope.select = function (value) {
if (!value) {
$scope.allSelected = value;
return;
}
var selCount = 0;
for (var i in $scope.shownProducts) {
if ($scope.shownProducts[i].selected) selCount++;
}
if (selCount == $scope.shownProducts.length) $scope.allSelected = true;
};
$scope.selectAll = function (value) {
for (var i in $scope.shownProducts) {
$scope.shownProducts[i].selected = value;
}
};
$scope.products = [{"name":1, "code":"001","stock":"abc","price":500},{"name":2, "code":"002","stock":"xyz","price":1000}];
$scope.shownProducts = $scope.products;
HTML:
$scope.select = function (value) {
if (!value) {
$scope.allSelected = value;
return;
}
var selCount = 0;
for (var i in $scope.shownProducts) {
if ($scope.shownProducts[i].selected) selCount++;
}
if (selCount == $scope.shownProducts.length) $scope.allSelected = true;
};
$scope.selectAll = function (value) {
for (var i in $scope.shownProducts) {
$scope.shownProducts[i].selected = value;
}
};
$scope.products = [{"name":1, "code":"001","stock":"abc","price":500},{"name":2, "code":"002","stock":"xyz","price":1000}];
$scope.shownProducts = $scope.products;
无需使用$parent
。移除它,一切正常
<ul ng-show="products && products.length > 0">
<li class="head">
<div class="column col-select"><input type="checkbox" ng-model="allSelected" ng-change="selectAll(allSelected)" /></div>
<div class="column col-name">Name</div>
<div class="column col-code">Code</div>
<div class="column col-stock">Stock</div>
<div class="column col-code">Price</div>
<div class="column col-buttons"></div>
</li>
<li ng-repeat="p in shownProducts = (products | filter: searchText)">
<div class="column col-select"><input type="checkbox" ng-model="p.selected" ng-change="select(p.selected)" /></div>
<div class="column col-name">{{ p.name }}</div>
<div class="column col-code">{{ p.code }}</div>
<div class="column col-stock">{{ p.stock }}</div>
<div class="column col-code">{{ p.price | currency: '$' : 2 }}</div>
<div class="column col-buttons">
<button class="btn btn-edit" ng-click="goTo('edit', $index)"><i class="fa fa-pencil"></i></button>
<button class="btn btn-delete" ng-click="goTo('delete', $index)"><i class="fa fa-trash"></i></button>
</div>
</li>
</ul>
-
名称
代码
股票
价格
-
{{p.name}}
{{p.code}}
{{p.stock}
{{p.price}货币:'$':2}
问题是ng开关创建了一个新的作用域,因此我必须使用$parent来访问声明所有内容的父作用域
至少添加一些解释,说明您的代码是如何解决OP的问题的。谢谢,但我刚刚意识到问题在于ng开关,我最初没有指定它。我发布了最新消息。