我如何通过角度表达＆＃34;小胡子＆＃34;像这样{{dish.id}}到
<button ng-click="singleDish()">
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这是按钮的控制器代码..
$scope.dishId = '0';
$scope.singleDish = function(id){
$scope.dishId == id;
};
$scope.dish = menuFactory.getDish($scope.dishId);
所以当点击按钮时
i tried (dish.id) ----- didnt work (doesnt change the scope variable dishId)
('{{dish.id}}') didnt work (doesnt change the scope variable dishId)
({{dish.id}}) caused an error.
如果有我的整个代码..
menu.html：
<!DOCTYPE html>
<html lang="en" ng-app="confusionApp">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head
content must come *after* these tags -->
<title>Ristaurant Menu</title>
<!-- Bootstrap -->
<!-- build:css styles/main.css -->
<!-- Bootstrap -->
<link href="../bower_components/bootstrap/dist/css/bootstrap.min.css" rel="stylesheet">
<link href="../bower_components/bootstrap/dist/css/bootstrap-theme.min.css" rel="stylesheet">
<link href="../bower_components/font-awesome/css/font-awesome.min.css" rel="stylesheet">
<link href="styles/bootstrap-social.css" rel="stylesheet">
<link href="styles/mystyles.css" rel="stylesheet">
<!-- endbuild -->
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div class="container">
<div class="row row-content" ng-controller="MenuController">
<div class="col-xs-12">
<button class="btn btn-xs btn-primary pull-right" ng-click="toggleDetails()">{{showDetails? 'Hide Details' : 'Show Details'}}</button>
<span class="pull-right"> </span>
<button class="btn btn-xs btn-primary pull-right" ng-click="toggleComment()">{{showComment? 'Hide Comments' : 'Show Comments'}}</button>
<ul class="nav nav-tabs" role="tablist">
<li role="presentation"
ng-class="{active:isSelected(1)}">
<a ng-click="select(1)"
aria-controls="all menu"
role="tab">The Menu</a>
</li>
<li role="presentation"
ng-class="{active:isSelected(2)}">
<a ng-click="select(2)"
aria-controls="appetizers"
role="tab">Appetizers</a>
</li>
<li role="presentation"
ng-class="{active:isSelected(3)}">
<a ng-click="select(3)"
aria-controls="mains"
role="tab">Mains</a>
</li>
<li role="presentation"
ng-class="{active:isSelected(4)}">
<a ng-click="select(4)"
aria-controls="desserts"
role="tab">Desserts</a>
</li>
</ul>
<div class="tab-content">
<ul class="media-list tab-pane fade in active">
<li class="media" ng-repeat="dish in dishes |filter: filtText">
<div class="row">
<div class="col-xs-2">
<div class="media-left media-middle">
<a href="#">
<img class="media-object img-thumbnail"
ng-src={{dish.image}} alt="Uthappizza">
</a>
</div>
</div>
<!-- <div class="media-body"> -->
<!-- <div class="row"> -->
<div class="col-xs-10">
<h2 class="media-heading">{{dish.name}}
<span class="label label-danger">{{dish.label}}</span>
<span class="badge">{{dish.price | currency}}</span></h2>
<p ng-show="showDetails">{{dish.description}}</p>
</div>
</div>
<!-- </div> -->
<div class="row">
<div class="col-xs-10 col-xs-offset-1">
<div ng-show="showComment">
<blockquote class="col-sm-12"ng-repeat = "comment in dish.comment | orderBy : sort">
<h4>{{comment.comment}}</h4>
<h5>{{comment.rating}} Stars.</h5>
<footer>
<cite title="Source Title">{{comment.author}} @ {{comment.date | date: 'dd MMMM,yyyy'}}</cite>
</footer>
</blockquote>
<p class="leaD"> ID: {{dish.id}} </p>
<div ng-controller="DishDetailController">
<button class="btn btn-default" ng-click="singleDish({{dish.id}})">
<a href="dishDetail.html"><h4> Leave your Comment </h4></a>
</button>
</div>
</div>
</div>
</div>
<!-- </div> -->
</li>
</ul>
</div>
</div>
</div>
</div>
<!-- build:js scripts/main.js -->
<script src="../bower_components/angular/angular.min.js"></script>
<script src="scripts/app.js"></script>
<script src="scripts/controllers.js"></script>
<script src="scripts/services.js"></script>
<!-- endbuild -->
</body>
</html>
app.js
'use strict';
angular.module('confusionApp',[]);
Controller.js
'use strict';
angular.module('confusionApp')
.controller('MenuController',['$scope','menuFactory', function($scope, menuFactory) {
$scope.tab = 1;
$scope.filtText = '';
$scope.showDetails = false;
$scope.dishes = menuFactory.getDishes();
$scope.select = function(setTab) {
this.tab = setTab;
if (setTab === 2) {
this.filtText = "appetizer";
}
else if (setTab === 3) {
this.filtText = "mains";
}
else if (setTab === 4) {
this.filtText = "dessert";
}
else {
this.filtText = "";
}
};
$scope.isSelected = function (checkTab) {
return (this.tab === checkTab);
};
$scope.toggleDetails = function(){
// !$scope.showDetails? $scope.showDetails = true : $scope.showDetails = false; ==> Valid solution.
$scope.showDetails = !$scope.showDetails;
};
$scope.toggleComment = function(){
$scope.showComment = !$scope.showComment;
};
}])
.controller('DishDetailController',['$scope','menuFactory',function($scope, menuFactory) {
$scope.dishId = '0';
$scope.singleDish = function(id){
$scope.dishId == id;
};
$scope.dish = menuFactory.getDish($scope.dishId);
$scope.sort = '';
$scope.comment = {
name: '',
stars: '',
comment: ''
};
$scope.submitComments = function(){
$scope.dish.comment.push({
rating: $scope.comment.stars,
comment: $scope.comment.comment,
author: $scope.comment.name,
date:Date.now()
});
$scope.comment = {
name: '',
stars: '',
comment: ''
};
$scope.commentForm.$setPristine();
};
}])
.controller('FeedbackController',['$scope', function ($scope) {
$scope.feedback = {
myChannel:"",
firstName: '',
lastName: '',
agree: false,
email: ''
};
$scope.channels = [
{
value:"tel",
label:"Tel."
}, {
value:"Email",
label:"Email"
}
];
$scope.invalidChannelSelection = false;
// when submit //
$scope.sendFeedback = function() {
console.log($scope.feedback);
if ($scope.feedback.agree && ($scope.feedback.myChannel === "")) {
$scope.invalidChannelSelection = true;
console.log('incorrect');
}
else {
$scope.invalidChannelSelection = false;
$scope.feedback = {myChannel:"", firstName:"", lastName:"",
agree:false, email:"" };
$scope.feedback.myChannel="";
$scope.feedbackForm.$setPristine();
console.log($scope.feedback);
}
};
}])
/* .controller('CommentsController',['$scope', function($scope){
}]) */;
services.js
angular.module('confusionApp').service('menuFactory', function(){
var dishes = [
{
id: 0,
name:'Uthapizza',
image: 'images/uthapizza.png',
category: 'mains',
label:'Hot',
price:'4.99',
description:'A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.',
comment: [
{
rating:5,
comment:"Imagine all the eatables, living in conFusion!",
author:"John Lemon",
date:"2012-10-16T17:57:28.556094Z"
},
{
rating:4,
comment:"Sends anyone to heaven, I wish I could get my mother-in-law to eat it!",
author:"Paul McVites",
date:"2014-09-05T17:57:28.556094Z"
},
{
rating:3,
comment:"Eat it, just eat it!",
author:"Michael Jaikishan",
date:"2015-02-13T17:57:28.556094Z"
},
{
rating:4,
comment:"Ultimate, Reaching for the stars!",
author:"Ringo Starry",
date:"2013-12-02T17:57:28.556094Z"
},
{
rating:2,
comment:"It's your birthday, we're gonna party!",
author:"25 Cent",
date:"2011-12-02T17:57:28.556094Z"
}
]
},
{
id: 1,
name:'Zucchipakoda',
image: 'images/zucchipakoda.png',
category: 'appetizer',
label:'',
price:'1.99',
description:'Deep fried Zucchini coated with mildly spiced Chickpea flour batter accompanied with a sweet-tangy tamarind sauce',
comment: [
{
rating:5,
comment:"Imagine all the eatables, living in conFusion!",
author:"John Lemon",
date:"2012-10-16T17:57:28.556094Z"
},
{
rating:4,
comment:"Sends anyone to heaven, I wish I could get my mother-in-law to eat it!",
author:"Paul McVites",
date:"2014-09-05T17:57:28.556094Z"
},
{
rating:3,
comment:"Eat it, just eat it!",
author:"Michael Jaikishan",
date:"2015-02-13T17:57:28.556094Z"
},
{
rating:4,
comment:"Ultimate, Reaching for the stars!",
author:"Ringo Starry",
date:"2013-12-02T17:57:28.556094Z"
},
{
rating:2,
comment:"It's your birthday, we're gonna party!",
author:"25 Cent",
date:"2011-12-02T17:57:28.556094Z"
}
]
},
{
id: 2,
name:'Vadonut',
image: 'images/vadonut.png',
category: 'appetizer',
label:'New',
price:'1.99',
description:'A quintessential ConFusion experience, is it a vada or is it a donut?',
comment: [
{
rating:5,
comment:"Imagine all the eatables, living in conFusion!",
author:"John Lemon",
date:"2012-10-16T17:57:28.556094Z"
},
{
rating:4,
comment:"Sends anyone to heaven, I wish I could get my mother-in-law to eat it!",
author:"Paul McVites",
date:"2014-09-05T17:57:28.556094Z"
},
{
rating:3,
comment:"Eat it, just eat it!",
author:"Michael Jaikishan",
date:"2015-02-13T17:57:28.556094Z"
},
{
rating:4,
comment:"Ultimate, Reaching for the stars!",
author:"Ringo Starry",
date:"2013-12-02T17:57:28.556094Z"
},
{
rating:2,
comment:"It's your birthday, we're gonna party!",
author:"25 Cent",
date:"2011-12-02T17:57:28.556094Z"
}
]
},
{
id: 3,
name:'ElaiCheese Cake',
image: 'images/elaicheesecake.png',
category: 'dessert',
label:'',
price:'2.99',
description:'A delectable, semi-sweet New York Style Cheese Cake, with Graham cracker crust and spiced with Indian cardamoms',
comment: [
{
rating:5,
comment:"Imagine all the eatables, living in conFusion!",
author:"John Lemon",
date:"2012-10-16T17:57:28.556094Z"
},
{
rating:4,
comment:"Sends anyone to heaven, I wish I could get my mother-in-law to eat it!",
author:"Paul McVites",
date:"2014-09-05T17:57:28.556094Z"
},
{
rating:3,
comment:"Eat it, just eat it!",
author:"Michael Jaikishan",
date:"2015-02-13T17:57:28.556094Z"
},
{
rating:4,
comment:"Ultimate, Reaching for the stars!",
author:"Ringo Starry",
date:"2013-12-02T17:57:28.556094Z"
},
{
rating:2,
comment:"It's your birthday, we're gonna party!",
author:"25 Cent",
date:"2011-12-02T17:57:28.556094Z"
}
]
}
];
this.getDishes = function(){
return dishes;
};
this.getDish = function(index){
return dishes[index];
};
});
提前谢谢。
答案 0 :(得分：1)
在您的功能中进行比较而不是分配（==而不是=），这应该有效：
<button ng-click="singleDish(dish.id)">
$scope.singleDish = function(id){
$scope.dishId = id; // notice: 1 `=` for assignment
};
有关比较器/分配器here的更多信息。
通过使用=，您可以为某个值指定值。
x = 1 //x now equals 1
x = 2 //x now equals 2
通过使用
==，您可以检查某些内容是否与其他内容相同。这不严格
x == 1 //is x equal to 1? (False)
x == 2 //is x equal to 2? (True)
true == 1 //does the boolean value of true equal 1? (True)
通过使用
===，您可以检查某些内容是否与其他内容相同。这也很严格。
x === 1 //is x equal to 1? (False)
x === 2 //is x equal to 2? (True)
true === 1 //does the boolean value of true equal 1? (False)
如果不清楚那么严格的是，它不仅检查两个值的相等性，还比较两个值的类型 价值也是。使用==将尝试转换表达式的一侧 与另一个是同一类型。例如，布尔和整数。 true的布尔值是1，因此1等于1？是的，没错。 但是，当使用strict时，它在尝试之前不会尝试转换 比较，它检查true是否等于1，这不是它们 是两种不同的数据类型，并返回false。
答案 1 :(得分：1)
只需将变量直接传递给这样的方法，然后使用＆＃39; =＆＃39;运营商。 ==和===用于比较。在此处阅读更多内容：Which equals operator (== vs ===) should be used in JavaScript comparisons?
<button ng-click="singleDish(dish.id)">
<强>控制器
$scope.singleDish = function(id){
console.log('Here is the id ' + id);
};