Javascript Angularjs更新指令视图-错误:ngRepeat:重复
index.html:Javascript Angularjs更新指令视图-错误:ngRepeat:重复,javascript,angularjs,Javascript,Angularjs,index.html: <body ng-app="homeApp" ng-controller="homeCtrl"> <xi-folder-nav></xi-folder-nav> <button class="btn btn-default " type="button" xi-search>Search</button> </body> <ol class="breadcrumb" > &l
<body ng-app="homeApp" ng-controller="homeCtrl">
<xi-folder-nav></xi-folder-nav>
<button class="btn btn-default " type="button" xi-search>Search</button>
</body>
<ol class="breadcrumb" >
<li ng-repeat="n in folderNav" ng-class="{'active' : $last}">
<a href="#" ng-hide="$last">{{ n }}</a>
<span ng-show="$last">{{ n }}</span>
</li>
</ol>
angular
.module('homeApp')
.service('dataService', dataService);
dataService.$inject = ['$rootScope'];
function dataService($rootScope) {
var service = {
folderNav: ['root'],
addFolderNav: function(nav){
service.folderNav.push( nav );
$rootScope.$broadcast( 'folderNav.update' );
},
};
return service;
}
angular
.module('homeApp')
.controller('homeCtrl',homeCtrl);
homeCtrl.$inject = ['$scope','dataService'];
function homeCtrl($scope,dataService) {
$scope.$on( 'folderNav.update', function( event ) {
$scope.folderNav = dataService.folderNav;
$scope.$apply();
});
$scope.folderNav = dataService.folderNav;
angular
.module('homeApp')
.directive('xiFolderNav', xiFolderNav);
.directive('xiSearch', xiSearch);
xiFolderNav.$inject = ['dataService'];
function xiFolderNav(dataService) {
return{
restrict: 'E',
templateUrl: 'js/app/home/nav.html',
};
}
xiSearch.$inject = ['dataService'];
function xiSearch(dataService) {
return{
restrict: 'A',
link: link
};
function link(scope, element, attr) {
element.bind('click', function(){
dataService.addFolderNav('gg');
});
}
}
Error: [ngRepeat:dupes] http://errors.angularjs.org/1.5.11/ngRepeat/dupes?p0=n%20in%20folderNav&p1=string%3Agg&p2=gg
controller.js:
<body ng-app="homeApp" ng-controller="homeCtrl">
<xi-folder-nav></xi-folder-nav>
<button class="btn btn-default " type="button" xi-search>Search</button>
</body>
<ol class="breadcrumb" >
<li ng-repeat="n in folderNav" ng-class="{'active' : $last}">
<a href="#" ng-hide="$last">{{ n }}</a>
<span ng-show="$last">{{ n }}</span>
</li>
</ol>
angular
.module('homeApp')
.service('dataService', dataService);
dataService.$inject = ['$rootScope'];
function dataService($rootScope) {
var service = {
folderNav: ['root'],
addFolderNav: function(nav){
service.folderNav.push( nav );
$rootScope.$broadcast( 'folderNav.update' );
},
};
return service;
}
angular
.module('homeApp')
.controller('homeCtrl',homeCtrl);
homeCtrl.$inject = ['$scope','dataService'];
function homeCtrl($scope,dataService) {
$scope.$on( 'folderNav.update', function( event ) {
$scope.folderNav = dataService.folderNav;
$scope.$apply();
});
$scope.folderNav = dataService.folderNav;
angular
.module('homeApp')
.directive('xiFolderNav', xiFolderNav);
.directive('xiSearch', xiSearch);
xiFolderNav.$inject = ['dataService'];
function xiFolderNav(dataService) {
return{
restrict: 'E',
templateUrl: 'js/app/home/nav.html',
};
}
xiSearch.$inject = ['dataService'];
function xiSearch(dataService) {
return{
restrict: 'A',
link: link
};
function link(scope, element, attr) {
element.bind('click', function(){
dataService.addFolderNav('gg');
});
}
}
Error: [ngRepeat:dupes] http://errors.angularjs.org/1.5.11/ngRepeat/dupes?p0=n%20in%20folderNav&p1=string%3Agg&p2=gg
指令.js:
<body ng-app="homeApp" ng-controller="homeCtrl">
<xi-folder-nav></xi-folder-nav>
<button class="btn btn-default " type="button" xi-search>Search</button>
</body>
<ol class="breadcrumb" >
<li ng-repeat="n in folderNav" ng-class="{'active' : $last}">
<a href="#" ng-hide="$last">{{ n }}</a>
<span ng-show="$last">{{ n }}</span>
</li>
</ol>
angular
.module('homeApp')
.service('dataService', dataService);
dataService.$inject = ['$rootScope'];
function dataService($rootScope) {
var service = {
folderNav: ['root'],
addFolderNav: function(nav){
service.folderNav.push( nav );
$rootScope.$broadcast( 'folderNav.update' );
},
};
return service;
}
angular
.module('homeApp')
.controller('homeCtrl',homeCtrl);
homeCtrl.$inject = ['$scope','dataService'];
function homeCtrl($scope,dataService) {
$scope.$on( 'folderNav.update', function( event ) {
$scope.folderNav = dataService.folderNav;
$scope.$apply();
});
$scope.folderNav = dataService.folderNav;
angular
.module('homeApp')
.directive('xiFolderNav', xiFolderNav);
.directive('xiSearch', xiSearch);
xiFolderNav.$inject = ['dataService'];
function xiFolderNav(dataService) {
return{
restrict: 'E',
templateUrl: 'js/app/home/nav.html',
};
}
xiSearch.$inject = ['dataService'];
function xiSearch(dataService) {
return{
restrict: 'A',
link: link
};
function link(scope, element, attr) {
element.bind('click', function(){
dataService.addFolderNav('gg');
});
}
}
Error: [ngRepeat:dupes] http://errors.angularjs.org/1.5.11/ngRepeat/dupes?p0=n%20in%20folderNav&p1=string%3Agg&p2=gg
我想向nav.html
添加一些数据并更新视图。但当我第二次点击按钮时,它显示了一些错误
我已经像大多数人一样将$scope.$apply()
添加到了控制器中,但效果不好
错误:
<body ng-app="homeApp" ng-controller="homeCtrl">
<xi-folder-nav></xi-folder-nav>
<button class="btn btn-default " type="button" xi-search>Search</button>
</body>
<ol class="breadcrumb" >
<li ng-repeat="n in folderNav" ng-class="{'active' : $last}">
<a href="#" ng-hide="$last">{{ n }}</a>
<span ng-show="$last">{{ n }}</span>
</li>
</ol>
angular
.module('homeApp')
.service('dataService', dataService);
dataService.$inject = ['$rootScope'];
function dataService($rootScope) {
var service = {
folderNav: ['root'],
addFolderNav: function(nav){
service.folderNav.push( nav );
$rootScope.$broadcast( 'folderNav.update' );
},
};
return service;
}
angular
.module('homeApp')
.controller('homeCtrl',homeCtrl);
homeCtrl.$inject = ['$scope','dataService'];
function homeCtrl($scope,dataService) {
$scope.$on( 'folderNav.update', function( event ) {
$scope.folderNav = dataService.folderNav;
$scope.$apply();
});
$scope.folderNav = dataService.folderNav;
angular
.module('homeApp')
.directive('xiFolderNav', xiFolderNav);
.directive('xiSearch', xiSearch);
xiFolderNav.$inject = ['dataService'];
function xiFolderNav(dataService) {
return{
restrict: 'E',
templateUrl: 'js/app/home/nav.html',
};
}
xiSearch.$inject = ['dataService'];
function xiSearch(dataService) {
return{
restrict: 'A',
link: link
};
function link(scope, element, attr) {
element.bind('click', function(){
dataService.addFolderNav('gg');
});
}
}
Error: [ngRepeat:dupes] http://errors.angularjs.org/1.5.11/ngRepeat/dupes?p0=n%20in%20folderNav&p1=string%3Agg&p2=gg
此错误是由
ng repeat
的中继器中的重复键造成的。参考
您可以添加按$index跟踪
以避免此错误,或在推送到中继器之前检查重复项。此错误是由ng repeat
的中继器中的重复键造成的。参考
您可以添加按$index跟踪
,以避免此错误,或在推送到中继器之前检查重复项。您正在数组中添加重复值,并在该数组上使用ng repeat
进行迭代
错误文本解释了这一切(在链接上)
中继器中不允许重复。使用“跟踪方式”表达式
指定唯一键。中继器:在folderNav中为n,重复键:
字符串:gg,重复值:gg
正如在上单击
一样,您正在将'gg'
添加到数组中,因此同一元素可能有多个条目
如果这是有意的,并且您希望有多个条目并使ng repeat
工作,则必须明确提到唯一键,即ng repeat
您可以将唯一密钥指定为
<ol class="breadcrumb" >
<li ng-repeat="n in folderNav track by $index" ng-class="{'active' : $last}">
<a href="#" ng-hide="$last">{{ n }}</a>
<span ng-show="$last">{{ n }}</span>
</li>
</ol>
{{n}}
在上面的代码中,$index
对于数组中的每个元素都是唯一的,它是数组中元素的索引号。您正在数组中添加重复值,并在该值上使用ng repeat
进行迭代
错误文本解释了这一切(在链接上)
中继器中不允许重复。使用“跟踪方式”表达式
指定唯一键。中继器:在folderNav中为n,重复键:
字符串:gg,重复值:gg
正如在上单击
一样,您正在将'gg'
添加到数组中,因此同一元素可能有多个条目
如果这是有意的,并且您希望有多个条目并使ng repeat
工作,则必须明确提到唯一键,即ng repeat
您可以将唯一密钥指定为
<ol class="breadcrumb" >
<li ng-repeat="n in folderNav track by $index" ng-class="{'active' : $last}">
<a href="#" ng-hide="$last">{{ n }}</a>
<span ng-show="$last">{{ n }}</span>
</li>
</ol>
{{n}}
在上面的代码中,$index
对于数组中的每个元素都是唯一的,它是数组中元素的索引号。还有一个问题,如果我不使用$apply来捕获指令中的更改,我该怎么办?在这种情况下,大多数人会做什么?@hiroxi我想你是在试图在控制器和指令之间共享数据。对于共享服务,您可以参考此plunker并记住,广播
是实现此目的的最后一个选项。还有一个问题,如果我不使用$apply捕获指令中的更改,我该怎么办?在这种情况下,大多数人会做什么?@hiroxi我想你是在试图在控制器和指令之间共享数据。对于共享服务,您可以参考此plunker,并记住,广播
是实现此目的的最后一个选项。有关错误的信息,请参阅,有关错误的信息,请参阅