最简单的backbone.js 示例

发布于 2024-10-28 18:53:45 字数 2136 浏览 0 评论 0原文

我正在创建一个简单的 backbone 示例来尝试学习它，但在渲染视图时遇到问题。我基于 Thomas Davis 的教程但看了很多其他可用的应用程序和教程。

我正在更改戴维斯的教程，不仅因为我想添加一个输入框，而且因为基于主干文档，我认为它需要更少的代码和不同的结构。显然，因为我无法让它发挥作用，所以我不知道需要什么和不需要什么。

我的最终目标是在 ul#friends-list 中的 li 标签中添加名称，尽管我不认为 el: 'body' 会在那里帮助我。

我做错了什么？感谢您的任何帮助。

我的 html：

<!DOCTYPE HTML>
<html>
<head>
<title>Tut</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/underscore.js/1.1.4/underscore-min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/backbone.js/0.3.3/backbone-min.js"></script>
</head>
<body>

<input type="text" placeholder="Enter friend's name" id="input" />
<button id="add-input">Add Friend</button>

<ul id="friends-list">
</ul>
<script type="text/javascript" src="test.js"></script>
</body>
</html>

我的 test.js

$(function() {

Friend = Backbone.Model.extend();
//Create my model

var friends = new Friend([ {name: 'Eddard Stark'}, {name: 'Robert Baratheon'} ]);
//Create new models to be used as examples


FriendList = Backbone.Collection.extend({
    model: Friend
});
//Create my collection

var friendslist = new FriendList;
//Created to hold my friends model


FriendView = Backbone.View.extend({

    tagName: 'li',

    events: {
        'click #add-input':  'getFriend',
    },

    initialize: function() {
        _.bindAll(this, 'render');
    }, 

    getFriend: function() {
        var friend_name = $('#input').val();
        var friend_model = new Friend({name: friend_name});
    },

    render: function() {
        console.log('rendered')
    },

});

var view = new FriendView({el: 'body'});
});

原文

I'm creating a bare bones backbone example to try to learn it and am having issues getting my view to render. I've based it on Thomas Davis's tutorial but looked at many of the other apps and tutorials available.

I'm changing Davis's tutorial not only because I want to add an input box, but also because based on the backbone docs I thought it needed less code and a different structure. Obviously because I can't get this to work, I don't know what's needed and what isn't.

My ultimate goal was to just add the names in li tags within ul#friends-list, although I don't think el: 'body' will help me there.

What am I doing wrong? Thanks for any help.

My html:

<!DOCTYPE HTML>
<html>
<head>
<title>Tut</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/underscore.js/1.1.4/underscore-min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/backbone.js/0.3.3/backbone-min.js"></script>
</head>
<body>

<input type="text" placeholder="Enter friend's name" id="input" />
<button id="add-input">Add Friend</button>

<ul id="friends-list">
</ul>
<script type="text/javascript" src="test.js"></script>
</body>
</html>

My test.js

$(function() {

Friend = Backbone.Model.extend();
//Create my model

var friends = new Friend([ {name: 'Eddard Stark'}, {name: 'Robert Baratheon'} ]);
//Create new models to be used as examples


FriendList = Backbone.Collection.extend({
    model: Friend
});
//Create my collection

var friendslist = new FriendList;
//Created to hold my friends model


FriendView = Backbone.View.extend({

    tagName: 'li',

    events: {
        'click #add-input':  'getFriend',
    },

    initialize: function() {
        _.bindAll(this, 'render');
    }, 

    getFriend: function() {
        var friend_name = $('#input').val();
        var friend_model = new Friend({name: friend_name});
    },

    render: function() {
        console.log('rendered')
    },

});

var view = new FriendView({el: 'body'});
});

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謌踐踏愛綪 2024-11-04 18:53:45

为了获得所需的功能，您的代码存在一些基本问题。我将你的代码变成了 jsfiddle，你可以在这里看到工作解决方案。

http://jsfiddle.net/thomas/Yqk5A/

代码

<!DOCTYPE HTML>
<html>
<head>
<title>Tut</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/underscore.js/1.1.4/underscore-min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/backbone.js/0.3.3/backbone-min.js"></script>
</head>
<body>

<input type="text" placeholder="Enter friend's name" id="input" />
<button id="add-input">Add Friend</button>

<ul id="friends-list">
</ul>
<script type="text/javascript" src="test.js"></script>
</body>
</html>

$(function() {

FriendList = Backbone.Collection.extend({
    initialize: function(){

    }
});

FriendView = Backbone.View.extend({

    tagName: 'li',

    events: {
        'click #add-input':  'getFriend',
    },

    initialize: function() {
        var thisView = this;
        this.friendslist = new FriendList;
        _.bindAll(this, 'render');
        this.friendslist.bind("add", function( model ){
            alert("hey");
            thisView.render( model );
        })
    },

    getFriend: function() {
        var friend_name = $('#input').val();
        this.friendslist.add( {name: friend_name} );
    },

    render: function( model ) {
        $("#friends-list").append("<li>"+ model.get("name")+"</li>");
        console.log('rendered')
    },

});

var view = new FriendView({el: 'body'});
});

I注意到您想要尽可能少的代码，因此我遗漏了一些您不需要的内容，例如声明实际模型。如果您使用像示例中这样的集合，可能会更容易。

另外，我刚刚推出了一个包含 Backbone 教程的新网站，可能有助于解决您的问题。

BackboneTutorials.com

You had some fundamental problems with your code to get the functionality that you required. I turned your code into a jsfiddle and you can see the working solution here.

http://jsfiddle.net/thomas/Yqk5A/

Code

<!DOCTYPE HTML>
<html>
<head>
<title>Tut</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/underscore.js/1.1.4/underscore-min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/backbone.js/0.3.3/backbone-min.js"></script>
</head>
<body>

<input type="text" placeholder="Enter friend's name" id="input" />
<button id="add-input">Add Friend</button>

<ul id="friends-list">
</ul>
<script type="text/javascript" src="test.js"></script>
</body>
</html>

$(function() {

FriendList = Backbone.Collection.extend({
    initialize: function(){

    }
});

FriendView = Backbone.View.extend({

    tagName: 'li',

    events: {
        'click #add-input':  'getFriend',
    },

    initialize: function() {
        var thisView = this;
        this.friendslist = new FriendList;
        _.bindAll(this, 'render');
        this.friendslist.bind("add", function( model ){
            alert("hey");
            thisView.render( model );
        })
    },

    getFriend: function() {
        var friend_name = $('#input').val();
        this.friendslist.add( {name: friend_name} );
    },

    render: function( model ) {
        $("#friends-list").append("<li>"+ model.get("name")+"</li>");
        console.log('rendered')
    },

});

var view = new FriendView({el: 'body'});
});

I noticed that you wanted as little code as possible so I left some things out that you don't need such as declaring an actual model. It might be easier if you use a collection like in the example instead.

Also I have just launched a new site containing Backbone tutorials which might help solve your problem.

BackboneTutorials.com

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