Struts 2 jQuery Subscribe被多次调用 [英] Struts 2 jQuery Subscribe is called more than once

问题描述

在struts 2 jQuery插件中，有一个可用于事件调用的发布/订阅框架.

In the struts 2 jQuery plugin there is a publish/subscribe framework which can be used for event invocation.

考虑此示例....

可以通过订阅onGridCompleteTopics事件来更改加载网格时的网格行为

One can change the grid behavior when grid is loaded by subscribing too onGridCompleteTopics event

<sjg:grid id="gridtable" dataType="json"
    href="%{url}" gridModel="gridModel" direction="%{pageDir}" width="800"
    shrinkToFit="true" onGridCompleteTopics="grid_compelete">

然后在js中:

    $.subscribe('grid_compelete', function(event, data) {
    //do some thing
}

问题是，如上所述，js和网格位于同一个页面中(它们在一个jsp中)，每次我重新加载页面时，都会调用subscribe，并且subscribe中的代码再次运行.

The problem is that, as above js and the grid are in the same page (they are in one jsp), every time I reload the page the subscribe is called and the code in the subscribe runs again.

我该如何预防?我在jquery.subscribe.1.2.3中找到了一个名为isSubscribed的函数，我认为框架应该在内部使用它来避免此问题.但这不是！

How can I prevent it?! I found a function in jquery.subscribe.1.2.3 which is called isSubscribed I thought the framework should use it internally to avoid this issue. But it is not!

我也没有找到任何方法来调用和使用此方法.

Also I did not find any way to call and use this method.

推荐答案

在一个可以使用

  $("#gridtable").subscribe('grid_compelete', function(event, data) {
    //do some thing
}

或杀死该主题(我自己不喜欢它)

or kill the topic (which I do not prefer it myself)

 $.subscribe('grid_compelete', function(event, data) {
    //do some thing
    $.destroyTopic('grid_compelete');
}

isSubscibe仍然存在并且附加到文档中，请参阅 Struts 2个jQuery插件isSubscribe无法正常运行，以获取@Roman C的完整代码

The isSubscibe is still there and it is attached to document, please see Struts 2 jQuery plugin isSubscribe not working for complete code by @Roman C

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