等效于explicitOriginalTarget 事件参数的跨浏览器

问题描述

有谁知道跨浏览器等效于explicitOriginalTarget 事件参数?此参数是 Mozilla 特定的，它为我提供了导致模糊的元素.假设我的页面上有一个文本输入和一个链接.文本输入具有焦点.如果我点击链接，文本输入的模糊事件会通过explicitOriginalTarget 参数为我提供Firefox 中的链接元素.

Does anyone know of crossbrowser equivalent of explicitOriginalTarget event parameter? This parameter is Mozilla specific and it gives me the element that caused the blur. Let's say i have a text input and a link on my page. Text input has the focus. If I click on the link, text input's blur event gives me the link element in Firefox via explicitOriginalTarget parameter.

我正在扩展 Autocompleter.Base 的 onBlur 方法，以便在搜索字段失去对给定元素的焦点时不隐藏搜索结果.默认情况下，如果搜索字段失去对任何元素的焦点，onBlur 方法将隐藏.

I am extending Autocompleter.Base's onBlur method to not hide the search results when search field loses focus to given elements. By default, onBlur method hides if search-field loses focus to any element.

Autocompleter.Base.prototype.onBlur = Autocompleter.Base.prototype.onBlur.wrap(
function(origfunc, ev) {
    var newTargetElement = (ev.explicitOriginalTarget.nodeType == 3 ? ev.explicitOriginalTarget.parentNode: ev.explicitOriginalTarget); // FIX: This works only in firefox because of event's explicitOriginalTarget property
    var callOriginalFunction = true;
    for (i = 0; i < obj.options.validEventElements.length; i++) {
        if ($(obj.options.validEventElements[i])) {
            if (newTargetElement.descendantOf($(obj.options.validEventElements[i])) == true || newTargetElement == $(obj.options.validEventElements[i])) {
                callOriginalFunction = false;
                break;
            }
        }
    }
    if (callOriginalFunction) {
        return origFunc(ev);
    }
}
);


new Ajax.Autocompleter("search-field", "search-results", 'getresults.php', { validEventElements: ['search-field','result-count'] });

谢谢.

推荐答案

在基于 Gecko 的浏览器之外的任何浏览器中都没有与explicitOriginalTarget 等效的内容.在 Gecko 中，这是一个内部属性，不应由应用程序开发人员(可能由 XBL 绑定编写者)使用.

There is no equivalent to explicitOriginalTarget in any of the other than Gecko-based browsers. In Gecko this is an internal property and it is not supposed to be used by an application developer (maybe by XBL binding writers).

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