jQuery上下文菜单 - 查找什么元素触发它 [英] jQuery context menu - finding what element triggered it off

问题描述

我想为我的一个页面写上下文菜单选项。
基本上一个div是右键单击，弹出一个选项菜单，可以用来执行任务。

I am trying to write a context menu option for a page of mine. Basically a div is right-clicked, an options menu pops up which can be used to perform tasks.

我的问题是试图找到原始元素触发一切（即右键单击的div）。

My problem is trying to find the original element which triggered everything (ie the div that was right-clicked).

我的jQuery代码更多或者lesS：

My jQuery code is more or lesS:

//this is what displays the context menu
$('.outfeedPosition').bind("contextmenu", function (e) {
    $('#contextMenu').css({
        top: e.pageY + 'px',
        left: e.pageX + 'px'
    }).show();

    //'this' is the element which was clicked by the user.
    alert($(this).attr('id'));

    return false;
});



//this is the contextMenu's button handler.
$('#ctxDelete').click(function () {
    alert('delete was clicked, but i dont know by which element - so I dont know which one to delete');
});


<div id="contextMenu">
    <ul>
        <li><a id="ctxInsert" href="#">Insert</a></li>
        <li><a id="ctxEdit" href="#">Edit</a></li>
        <li><a id="ctxDelete" href="#">Delete</a></li>
    </ul>
</div>

-
所以 - 我可以看到，点击发生。
但不是在单击菜单项时。

-- So - I can see what element created the event when the initial right-click happens. But not when the menu item is clicked.

我正在通过将元素写入隐藏的文本框，在右键单击时， ，然后在单击其中一个选项时读取它，然后在菜单关闭时将其删除。
看起来不像是理想的方法 - 我觉得我缺少一些基本的东西。

I was working on fumbling something together by writing the element out to a hidden textbox when it is right-clicked, then reading it when one of the options is clicked, then removing it when the menu closes. Doesn't seem like the ideal approach though - and I feel like i'm missing something basic.

希望你看到我想要做的。
我可以根据请求发布更完整的示例。

Hope you see what I am trying to do. I can post a more complete example on request.

推荐答案

您可以考虑使用jQuery 数据存储方法。

You could consider using the jQuery data storage methods.

在上下文菜单代码中，您可以put：

In your context menu code you can put:

$('.outfeedPosition').bind("contextmenu", function (e) {
    $('#contextMenu').css({
        top: e.pageY + 'px',
        left: e.pageX + 'px'
    }).show();

    //Store the item that was clicked 
    $("#contextMenu").data('originalElement', this);

    return false;
});

然后当你想引用启动点击的元素时，你可以这样做： p>

Then when you want to reference the element that initiated the click, you can just do this:

$('#ctxDelete').click(function () {
    var originalElement = $("#contextMenu").data('originalElement');
    alert('delete was clicked by ' + originalElement.id );
});

在jQuery函数中放入 originalElement code> $（）来访问jQuery goodness。你放置数据的位置并不重要，因为任何DOM元素都可以有数据关联。你可以存储任何东西 - 在上面的示例代码中，我存储 HTMLElement raw（不是jQueryified），但是如果你想的话，你也可以存储它。

And put originalElement in the jQuery function $() to access the jQuery goodness. It doesn't matter where you put the data, since any DOM element can have data associated to it. You can store anything - in the example code above, I store the HTMLElement raw (not jQueryified) but you can store that too if you want.

在这里查看一个例子： http://www.jsfiddle.net/jonathon/sTJ6M/

See here for a little example: http://www.jsfiddle.net/jonathon/sTJ6M/

这篇关于jQuery上下文菜单 - 查找什么元素触发它的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！