ASP.NET MVC采取行动两次打电话 [英] ASP.NET MVC Action is Called Twice

问题描述

我有一个被称为两次特定的控制器动作，被奇怪的这一边是造成问题，我的应用程序的单部分（不是一个真正的问题，它只是提醒我注意双呼叫）。

I have a specific controller action that is being called twice, which aside from being weird is causing problems with a singleton portion of my application (not really a problem, it just brought the double call to my attention).

任何想法，为什么一个控制器的动作会两次，每次被执行？

Any idea why a controller action would be executed twice every time?

推荐答案

不返回假或preventing对事件的默认操作在JavaScript单击处理程序上一个链接，使得通过AJAX调用。在这种情况下，它也将采取链接的默认操作（即非Ajax后，以相同的URL）。

Not returning false or preventing the default action on the event in a JavaScript click handler on a link that makes the call via AJAX. In this case, it will also take the default action of the link (i.e., a non-AJAX post to the same URL).

例

<%= Html.ActionLink( "action", "controller" ) %>


$(function() {
   $('a').on('click', function(e) {
      // solve with "e.preventDefault();" here
      var href = $(this).attr('href');
      $.get(href, function() { ... });
      // or solve with "return false;" here to prevent double request
   });
}):

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