Backbone.js的 - 事件，知道被点击了什么 [英] backbone.js - events, knowing what was clicked

问题描述

在我Backbone.js的视图类之一，我有这样的：

In one of my backbone.js view classes, I have something like:

...

events: {
  'click ul#perpage span' : 'perpage'
},

perpage: function() {
  // Access the text of the span that was clicked here
  // Something like: alert($(element).text())
},

...

因为我的每个网页的标记可能是这样的：

because my per page markup might have something like:

<ul id="perpage">
  <li><span>5</span></li>
  <li><span>10</span></li>
</ul>

那么究竟如何可以找到有关引发事件的元素信息？或者在这种情况下，该被点击

So how exactly can I find information about the element that caused the event? Or in this instance, that was clicked?

推荐答案

通常在事件绑定，你只需使用 $（本），但我相当确保骨干视图设置，以便这个总是引用视图，所以试试这个：

Normally on an event bind, you would just use $(this), but I'm fairly sure Backbone views are set up so that this always refer to the view, so try this:

perpage: function(ev) {
   alert($(ev.target).text());
}

夜已深修改：您可能需要使用 $（ev.currentTarget）。查看pawlik的回答dicussion低于

REALLY LATE EDIT: You probably want to use $(ev.currentTarget). See dicussion on pawlik's answer below

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