我正在阅读Developing Backbone Applications 并遵循Todo 示例。 但是当我运行下面的代码时，出现了一个错误:
Uncaught ReferenceError: createOnEnter is not defined.
什么？它已定义，但我不知道哪里出了问题？
var app = {};
app.Todo = Backbone.Model.extend({
defaults: {
title: "",
text: ""
},
toggle: function(){
this.save({
closed: !this.get('closed')
});
}
});
var TodoList = Backbone.Collection.extend({
model: app.Todo,
localStorage: new Backbone.LocalStorage('todos-backbone'),
closed: function(){
return this.filter(function(todo){
return todo.get('closed');
});
},
open: function(){
return this.without.apply(this, this.closed());
}
});
app.Todos = new TodoList();
app.TodosView = Backbone.View.extend({
el: '#query-chat-main',
events: {
'click #save-todo': createOnEnter,
'click #clear-todos': cleartodos,
'click #close-todos': closetodos
},
initialize: function(){
this.$title = this.$('#todo-title');
this.$text = this.$('#todo-text');
this.listenTo(app.todos, 'add', this.addtodo);
this.listenTo(app.todos, 'reset', this.addtodos);
app.todos.fetch();
},
render: function(){
var closed = app.todos.closed().length;
var open = app.todos.open().length;
},
addtodo: function(todo){
//var view = new app.TodoView({model: todo});
$('#todos').append(view.render().el);
},
addtodos: function(){
this.$('#todos').html('');
app.todos.each(this.addtodo, this);
},
newAttributes: function(){
return {
title: this.$title.val().trim(),
text: this.$text.val().trim(),
closed: false
};
},
createOnEnter: function(e){
e.preventDefault();
app.todos.create(this.newAtrributes());
this.$title.val('');
this.$text.val('');
},
cleartodos: function(e){
e.preventDefault();
_.invoke(app.todos.closed(), 'destroy');
},
closetodos: function(e){
e.preventDefault();
app.todos.each(function(todo){
todo.save({
closed: true
});
});
}
});
new app.TodosView();
最佳答案
您需要用引号将每个方法名括起来:
events: {
'click #save-todo': 'createOnEnter',
'click #clear-todos': 'cleartodos',
'click #close-todos': 'closetodos'
},
关于javascript - Backbone : Event handler not defined?，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26571989/