如何在 Angular 中打印新对象的 属性 值?
How to print a new object's property value in Angular?
我正在开发一个列表应用程序,最初用户会看到一个输入和按钮。在输入中,用户输入新列表的名称,单击按钮后,会出现一个空列表,可以输入项目。添加新列表有效,adding/removing 列表项也是如此。但是列表的名称不会打印在页面上。目前没有任何高级 CSS,列表的名称应该全部显示在页面顶部,而不是直接显示在各自列表的正上方。
https://codepen.io/anon/pen/RVmeLe
HTML:
<div ng-app="notepadApp">
<div ng-controller="notepadController as notepadCtrl">
<header ng-repeat="list in notepadCtrl.lists">
<form name="removeListForm" ng-submit="notepadCtrl.removeList($index)">
<input type="submit" value="Remove list">
</form>
<h1>{{list.name}}</h1>
</header>
<div ng-repeat="list in notepadCtrl.lists" class="shoppingList" ng-controller="ItemController as itemCtrl">
<ul>
<li ng-repeat="item in list.items">
<label>
<input type="checkbox" ng-model="item.checked">
<span class="item-name-wrapper">{{item.name}}</span>
</label>
<form name="itemForm" ng-submit="itemCtrl.removeItem(list, $index)">
<input type="submit" value="remove">
</form>
</li>
</ul>
<form name="itemForm" ng-submit="itemCtrl.addItem(list)">
<input type="text" ng-model="itemCtrl.item.name">
<input type="submit" value="Add item">
</form>
</div>
<form name="addListForm" ng-submit="notepadCtrl.addList(newListName)">
<input type="text" ng-model="notepadCtrl.list.name">
<input type="submit" value="Add list">
</form>
</div>
</div>
Javascript:
(function(){
var app = angular.module('notepadApp', []);
var shoppingLists = [
];
app.controller('notepadController', function(){
var notepadCtrl = this;
notepadCtrl.lists = shoppingLists;
notepadCtrl.addList = function(newListName) {
var newList = {
name: newListName,
items:[]
};
shoppingLists.push(newList);
};
notepadCtrl.removeList = function(index) {
shoppingLists.splice(index, 1);
};
});
app.controller('ItemController', function(){
this.item = {};
this.addItem = function(list){
list.items.push(this.item);
this.item = {};
};
this.removeItem = function(list, index) {
list.items.splice(index, 1);
};
});
})();
您只想替换:
ng-submit="notepadCtrl.addList(newListName)"
与:
ng-submit="notepadCtrl.addList(notepadCtrl.list.name)"
我正在开发一个列表应用程序,最初用户会看到一个输入和按钮。在输入中,用户输入新列表的名称,单击按钮后,会出现一个空列表,可以输入项目。添加新列表有效,adding/removing 列表项也是如此。但是列表的名称不会打印在页面上。目前没有任何高级 CSS,列表的名称应该全部显示在页面顶部,而不是直接显示在各自列表的正上方。
https://codepen.io/anon/pen/RVmeLe
HTML:
<div ng-app="notepadApp">
<div ng-controller="notepadController as notepadCtrl">
<header ng-repeat="list in notepadCtrl.lists">
<form name="removeListForm" ng-submit="notepadCtrl.removeList($index)">
<input type="submit" value="Remove list">
</form>
<h1>{{list.name}}</h1>
</header>
<div ng-repeat="list in notepadCtrl.lists" class="shoppingList" ng-controller="ItemController as itemCtrl">
<ul>
<li ng-repeat="item in list.items">
<label>
<input type="checkbox" ng-model="item.checked">
<span class="item-name-wrapper">{{item.name}}</span>
</label>
<form name="itemForm" ng-submit="itemCtrl.removeItem(list, $index)">
<input type="submit" value="remove">
</form>
</li>
</ul>
<form name="itemForm" ng-submit="itemCtrl.addItem(list)">
<input type="text" ng-model="itemCtrl.item.name">
<input type="submit" value="Add item">
</form>
</div>
<form name="addListForm" ng-submit="notepadCtrl.addList(newListName)">
<input type="text" ng-model="notepadCtrl.list.name">
<input type="submit" value="Add list">
</form>
</div>
</div>
Javascript:
(function(){
var app = angular.module('notepadApp', []);
var shoppingLists = [
];
app.controller('notepadController', function(){
var notepadCtrl = this;
notepadCtrl.lists = shoppingLists;
notepadCtrl.addList = function(newListName) {
var newList = {
name: newListName,
items:[]
};
shoppingLists.push(newList);
};
notepadCtrl.removeList = function(index) {
shoppingLists.splice(index, 1);
};
});
app.controller('ItemController', function(){
this.item = {};
this.addItem = function(list){
list.items.push(this.item);
this.item = {};
};
this.removeItem = function(list, index) {
list.items.splice(index, 1);
};
});
})();
您只想替换:
ng-submit="notepadCtrl.addList(newListName)"
与:
ng-submit="notepadCtrl.addList(notepadCtrl.list.name)"