我正在处理一个简单的backbone.js 示例。问题是在页面加载时它没有在页面上显示任何内容。但是,在 Chrome 调试器控制台中,如果我显式调用视图及其 render() 方法,则结果会以正确的 json 数据显示在屏幕上。
任何帮助都会非常非常感谢!
var Clients = Backbone.Collection.extend({
model: Client,
url: 'api/Contacts'
});
var clients = new Clients();
var UserItemView = Backbone.View.extend({
tagName: 'li',
template: _.template($('#contacts-template').html()),
render: function() {
this.$el.html(this.template(this.model.toJSON()));
return this;
}
});
var UserListView = Backbone.View.extend({
el: $('#contacts'),
render: function() {
this.$el.empty();
var self = this;
_.each(this.collection.models, function(model) {
self.renderItem(model);
});
},
renderItem: function(item) {
var itemView = new UserItemView({
model: item
});
this.$el.append(itemView.render().el);
}
});
下面是 index.html 页面的代码:
<ul id="contacts"></ul>
<script id="contacts-template" type="text/template">
<%= FirstName %> <%= LastName %>
</script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.3/underscore-min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/backbone.js/0.9.2/backbone-min.js"></script>
<script src="scripts/app/app.js"></script>
<script>
$(document).ready(function () {
alert('HI'); // I verified this alert works
clients.fetch();
var userListView = new UserListView({ collection: clients });
userListView.render();
});
</script>