我有一个具有自动填充功能的文本框,点击“单击我”按钮后,自动填充中的文字将添加到表中,这里的链接完全正常,
var app = angular.module('app', []);
app.factory('Service', function() {
var typesHash = [ {
id :1,
name : 'lemon',
price : 100,
unit : 2.5
}, {
id : 2,
name : 'meat',
price : 200,
unit : 3.3
} ];
var localId = 3;
availableTags = [
"ActionScript",
"AppleScript",
"Asp",
"BASIC",
"C",
"C++",
"Clojure",
"COBOL",
"ColdFusion",
"Erlang",
"Fortran",
"Groovy",
"Haskell",
"Java",
"JavaScript",
"Lisp",
"Perl",
"PHP",
"Python",
"Ruby",
"Scala",
"Scheme"
];
var service = {
addTable : addTable,
getData : getData,
complete:complete
};
return service;
function complete($scope){
$( "#txt" ).autocomplete({
source: availableTags,
messages: {
noResults: '',
results: function() {}
}
});
$("#txt" ).on( "autocompleteselect", function( event, ui ) {
$scope.tableTools.inputData=ui.item.value;
} );
}
function addTable(name,price) {
typesHash.push({id:localId++, name:name, price:price,unit:1});
}
function getData() {
return typesHash;
}
});
app.controller('table', function(Service,$scope) {
//get the return data from getData funtion in factory
this.typesHash = Service.getData();
//get the addtable function from factory
this.addTable = Service.addTable;
this.complete=Service.complete($scope);
});
但是只要我把ng-controller =“table as tableTools”放在div而不是body中,然后自动填充文本框开始表现得很有趣并且它无法正常工作
任何人都可以解释原因并告诉我如何以一种方式修复它,即使将ng-controller =“table as tableTools”放在div中也可以吗?
更新
这是错误:
未捕获的TypeError:无法设置未定义的属性'inputData'
这一行:
$scope.tableTools.inputData = ui.item.value;
(请记住点击建议的文字后问题就开始了)
答案 0 :(得分:2)
这种情况正在发生,因为您在同一页面上有两个带有两个不同元素的控制器,因此范围没有正确绑定。
您执行此操作的最佳代码是: -
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<link data-require="bootstrap@*" data-semver="3.3.1" rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" />
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.2/themes/smoothness/jquery-ui.css">
<title>Insert title here</title>
<script>
var app = angular.module('app', []);
app.factory('Service', function() {
var typesHash = [ {
id :1,
name : 'lemon',
price : 100,
unit : 2.5
}, {
id : 2,
name : 'meat',
price : 200,
unit : 3.3
} ];
var localId = 3;
availableTags = [
"ActionScript",
"AppleScript",
"Asp",
"BASIC",
"C",
"C++",
"Clojure",
"COBOL",
"ColdFusion",
"Erlang",
"Fortran",
"Groovy",
"Haskell",
"Java",
"JavaScript",
"Lisp",
"Perl",
"PHP",
"Python",
"Ruby",
"Scala",
"Scheme"
];
var service = {
addTable : addTable,
getData : getData,
complete:complete
};
return service;
function complete($scope){
$( "#txt" ).autocomplete({
source: availableTags,
messages: {
noResults: '',
results: function() {}
}
});
$("#txt" ).on( "autocompleteselect", function( event, ui ) {
console.log($scope);
$scope.tableTools.inputData=ui.item.value;
} );
}
function addTable(name,price) {
typesHash.push({id:localId++, name:name, price:price,unit:1});
}
function getData() {
return typesHash;
}
});
app.controller('table', function(Service,$scope) {
//get the return data from getData funtion in factory
this.typesHash = Service.getData();
//get the addtable function from factory
this.addTable = Service.addTable;
this.complete=Service.complete($scope);
});
</script>
</head>
<body ng-app="app" ng-controller="table as tableTools" >
<form >
<div class="row commonRow" >
<div class="col-xs-1 text-right">
item:
</div>
<div class="col-xs-5">
<input id="txt" type="text" style="width: 100%;" ng-keyup="tableTools.complete()" ng-model="tableTools.inputData">
</div>
<div class="col-xs-2">
<button class="btn btn-primary" ng-click="tableTools.addTable(tableTools.inputData);tableTools.inputData=''">
click me
</button>
</div>
</div>
</form>
<div class="row commonRow">
<div class="col-xs-1"></div>
<div class="col-xs-10">
<table class="table table-hover">
<thead>
<tr>
<th>item</th>
</tr>
</thead>
<tbody> <!--No need for controller here-->
<tr ng-repeat="x in tableTools.typesHash track by x.id">
<td>
<div>{{x.name}}</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
</html>
答案 1 :(得分:1)
如果你添加
$scope.tableTools={}
正下方
function complete($scope){
第二个按预期工作。
任何人都可以解释原因
只要尚未定义对象'$ scope.tableTools',就无法成功向其添加属性
答案 2 :(得分:1)
这个问题隐藏在对angularjs
对象生命周期的误解中。
最重要的是:
services
(工厂/提供商...不同的创作,但最后相同) 单身 controllers
实例化。 (通过角度应用程序生命周期,有一个控制器有很多,多个实例..) 那发生了什么?
有一项服务:
app.factory('Service', function() {
...
并且有一个控制器将其范围传递到该服务
app.controller('table', function(Service,$scope) {
...
this.complete=Service.complete($scope);
在页面上我们可以看到:
// first usage of controller
// its first instance is created, $scope is passed
<div class="row commonRow" ng-controller="table as tableTools">
// second usage
// different instance is created... and it also passes the §scope
<tbody ng-controller="table as iterateTb">
但如上所述 - 服务只有一个。当第一个控制器通过其$scope
时,第二个控制器也会在...之后执行..这导致了问题。
我们可以使用控制器内部的服务。这是角度的设计原则。但我们不应该通过美元范围......