我的视图中的 Backbone.js 事件被多次触发 [英] Backbone.js events in my views being triggering multiple times

问题描述

我可能对如何实现backbone.js有误解，因为我所有支持多个模型的视图(例如，可以显示多个产品的产品"视图)都会将事件发送到每个视图在该会话中创建.

I may have a misunderstanding on how to implement backbone.js, because all of my views that support multiple models (for example, a "Product" view that that can display multiple products), will send events to every view that was created in that session.

因此，在下面的示例中，当我单击 #redirect_product 链接时，会根据我看到的产品数量多次调用redirect_product".如果我浏览了 5 个产品，在第 6 次点击时，我会收到 6 个提醒.

So in the example below, when I click the #redirect_product link, the "redirect_product" is called multiple times depending on how many products i've seen. If I've viewed 5 products, on the 6th click I will get 6 alerts.

这是怎么回事?

  505     /****************PRODUCT VIEW****************/
  506     App.Views.Product = Backbone.View.extend({
  507         el: $('#content_sec'),
  508 
  509         events: {
  510             "click #redirect_product": "redirect_product",
  511         },
  512 
  513         initialize: function(options) {
  514             this.model = this.options.model;
  515             this.render();
  516 
  517         },
  518 
  519         render: function() {
  520             $(this.el).empty();
  521             $('#product_detail_template').tmpl(this.model.toJSON()).appendTo($(this.el));
  522 
  523 
  524             //Activate facebook buttons
  525             if (typeof FB  != "undefined"){
  526                         FB.XFBML.parse(document.getElementById('item_share'))
  527             }
  528 
  529             wishlist.init();
  530             return this;
  531         },
  532 
  533         redirect_product: function() {
  534             //Send data on what product being clicked by whom
  535             alert('hi');
  536 
  537 
  538             //Open new window with product for user
  539             var external_link = this.model.get('product').attributes['External Link'];
  540             window.open(external_link, "external_site");
  541 
  542         },
  543     });

推荐答案

我认为问题在于您对所有视图使用相同的 el.

The problem, I think, is that your using the same el for all your views.

创建新产品时，请执行以下操作:

When you create a new Product, do something like this:

$('#content_sec').append('<div class="productView"></div>');
var product = new Product();
var view = new ProductView({model: product, el: $('.productView:last')});

一旦每个产品都有自己的范围，事件就会按预期工作.

Once each product has its own scope, then the events will work as expected.

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