Question

我是backbonejs和underscorejs的新手。我发现了一些video材料，我试图修改示例时遇到问题。

这是我的代码：

<html>
<head >
    <meta charset="UTF-8">  
    <script type="text/javascript" src="javascript/jQuery.js"></script>
    <script type="text/javascript" src="javascript/underscore.js"></script>
    <script type="text/javascript" src="javascript/backbone.js"></script>

    <script type="text/template" id="list-template">
      <li><a href="<%= href %>"><%= text %></a></li>
    </script>

    <script type="text/javascript">


        model = new Backbone.Model({
            data: [
                {text: "Google", href: "google.com"},
                {text: "Facebook", href: "facebook.com"},
                {text: "Yahoo", href: "yahoo.com"}
            ]
        });


        var View = Backbone.View.extend({
            el: "#container",
            events: {
                "click button": "render"
            },
            render: function(){
                var data = this.model.get('data');
                for(var i = 0; i<data.length; i++){
                    var variables = { href: data[i].href, text: data[i].text };
                    var li = _.template( $("#list-template").html(), variables );
                    this.$el.find('ul').append(li);
                }
            }
        });

        var view = new View({ model: model });

    </script>
</head>

<body>
    <div id="container">
        <button>Load</button>
        <ul id="list">
    </ul>
    </div>
</body>

它当然不起作用，我找不到原因。如果您看到请回答或指导如何在自定义事件上绑定模板，而不是初始化。

Answer 1

问题是JavaScript在页面上呈现元素之前正在执行。将代码包裹在$(document).ready()：

中

$(document).ready(function() {
    var model = new Backbone.Model({
    ....
    var view = new View({ model: model });
});

Backbone与下划线模板示例

1 个答案: