如何从 Backbone 中的对象中获取元素？

Question

我的对象模型为：

var wo = new WordModel({
    "url": window.location.href,
    "time": toDay(),
    "w": w.trim()
});

timelineCollection.add(wo);

我尝试获取 timelineCollection 中的所有元素，其中 time 是 04/02/2017。我试过这个：

var o = {
    time: "04/02/2017"
};

var filtered = timelineCollection.where(o);
console.log(filtered);

但是对我不起作用

Answer 1

Backbone 的 collection where function 确实是您应该为此使用的。

// short syntax, every object becomes a Backbone.Model by default.
var collection = new Backbone.Collection([{
    id: 0,
    time: "04/02/2017",
  }, {
    id: 1,
    time: "05/02/2017",
  },
  // you can mix both plain objects and Model instances
  new Backbone.Model({
    id: 2,
    time: "04/07/2017",
  }), new Backbone.Model({
    id: 3,
    time: "04/02/2017",
  })
]);

// passing an existing model works too.
var model = new Backbone.Model({
  id: 4,
  time: "04/02/2017",
});

collection.add(model);

console.log(collection.where({
  time: "04/02/2017"
}));

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js"></script>

如何从 Backbone 中的对象中获取元素？

How to get elements from object where in Backbone?

javascript

backbone.js

backbone.js-collections