将参数传递给主干视图的主干事件对象 [英] Passing parameters into the Backbone events object of a backbone view

问题描述

我有以下主干视图事件.它是一个产品视图 - 带有三个选项卡(全部"、前 3 名"、前 5 名")

I have the following events for a Backbone View. Its a product view - with three tabs ("All", "Top 3", "Top 5")

我能否以某种方式将参数传递到方法声明中，使其等效于以下内容(这不起作用)?

Can I somehow pass a parameter into the method declaration so that it is equivalent to the following (this doesn't work)?

events : {
    "click #top-all":          "topProducts(1)"
    "click #top-three":      "topProducts(2)"
    "click #top-ten":         "topProducts(3)"
},
topProducts(obj){
    // Do stuff based on obj value
}

推荐答案

您可以将额外的参数放在可点击项的数据属性中；像这样:

You could put the extra argument in a data attribute on the clickable item instead; something like this:

<a id="top-all" data-pancakes="1">

然后 topProducts 可以自己解决:

And then topProducts can figure it out itself:

topProducts: function(ev) {
    var pancakes = $(ev.currentTarget).data('pancakes');
    // And continue on as though we were called as topProducts(pancakes)
    // ...
}

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