我有一个我用ng-repeat
显示的值数组。当我点击其中一个时,我将此值添加到另一个数组中。如果已经存在,我将其删除。它在这里运作良好。但我有一个按钮,在第二个推动所有阵列。它正在工作,但即使已经存在一个值,我也可以推动整个阵列的有效时间。当然,如果我检查一个或两个值,然后按“全选”,它必须选择所有值,也可以选择单个选择的值。通过这种方式,这是带有jsfiddle的代码:
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.all_titles = [
"Title 1",
"Title 2",
"Title 3",
"Title 4"
];
$scope.selection=[];
$scope.getSelectedItem = function getSelectedItems(title) {
var idx = $scope.selection.indexOf(title);
// is currently selected
if (idx > -1) {
$scope.selection.splice(idx, 1);
}
// is newly selected
else {
if(Array.isArray(title)) {
for(var i=0;i<title.length;i++) {
$scope.selection.push(title[i]);
}
} else {
$scope.selection.push(title);
}
}
};
}
<div ng-controller="MyCtrl">
<div>
<button data-ng-click="getSelectedItem(all_titles)">
Select all
</button>
</div>
<div ng-repeat="title in all_titles">
<a ng-click="getSelectedItem(title)">{{title}}</a>
</div>
<hr>
<div>
{{selection}}
</div>
</div>
答案 0 :(得分:2)
你的情景对我来说不太清楚。
如果您希望全部选择按钮的行为类似于所有链接,那么这是您的解决方案:
$scope.getSelectedItem = function getSelectedItems(title) {
if(Array.isArray(title)) {
for(var i=0;i<title.length;i++) {
$scope.pushIt(title[i]);
}
} else {
$scope.pushIt(title);
}
};
$scope.pushIt = function pushIt(title) {
var idx = $scope.selection.indexOf(title);
// remove if already in array
if (idx > -1) {
$scope.selection.splice(idx, 1);
} else {
$scope.selection.push(title);
}
};
如果您想要全部选择按钮添加剩余的项目,那么这是您的解决方案:
$scope.getSelectedItem = function getSelectedItems(title) {
if (Array.isArray(title)) {
for (var i = 0; i < title.length; i++) {
var idx = $scope.selection.indexOf(title[i]);
// don't add if already in the array
if (idx == -1) {
$scope.selection.push(title[i]);
}
}
} else {
var idx = $scope.selection.indexOf(title);
// is currently selected
if (idx > -1) {
$scope.selection.splice(idx, 1);
} else {
$scope.selection.push(title);
}
}
};
答案 1 :(得分:0)
您的代码有效,但您需要创建其他
for(var i=0;i<title.length;i++) {
var n_idx = $scope.selection.indexOf(title[i]);
if( n_idx == -1){
$scope.selection.push(title[i]);
}else{
$scope.selection.splice(n_idx, 1);
}
}
var myApp = angular.module('myApp',[]);
//myApp.directive('myDirective', function() {});
//myApp.factory('myService', function() {});
function MyCtrl($scope) {
$scope.all_titles = [
"Title 1",
"Title 2",
"Title 3",
"Title 4"
];
$scope.selection=[];
$scope.getSelectedItem = function getSelectedItems(title) {
var idx = $scope.selection.indexOf(title);
// is currently selected
if (idx > -1) {
$scope.selection.splice(idx, 1);
}
// is newly selected
else {
if(Array.isArray(title)) {
console.log("YES");
for(var i=0;i<title.length;i++) {
var n_idx = $scope.selection.indexOf(title[i]);
if( n_idx == -1){
$scope.selection.push(title[i]);
}else{
$scope.selection.splice(n_idx, 1);
}
}
} else {
$scope.selection.push(title);
}
}
};
}
答案 2 :(得分:0)
Netzach对这个错误是正确的。
此外,我会通过使用哈希而不是循环遍历数组来优化代码。然后,排除/包含该值的代码将如下所示:
if($scope.selection[title]){
delete $scope.selection[title];
} else {
$scope.selection[title] = true;
}
这是一个工作示例的jsfiddle: