如何在select2选择上启用悬停事件 [英] How do enable hover event on select2 choice

问题描述

我正在使用select2.内置事件不支持所选项目上的悬停事件，因此，我试图在将鼠标悬停在选定项目上时触发悬停事件(多项选择).

I'm using select2. The build-in event does not support hover event on choiced item, therefore I'm trying to fire hover event when mouse over the item (multiple selection).

function tagFormat(state) {
    return '<span class="tagElement">' + state.text + '</span>';
}
$('.tagElement').hover(function(event){
    alert('something');
});
var sampleTags = ['red','white'];
$("[taggable]").select2({
    formatSelection: tagFormat,
    maximumInputLength: 10,
    tags:sampleTags,
    tokenSeparators: [",", " "]
});

在 http://bootply.com/96527 引导，您可以看到在select2之外，悬停事件确实可以在select2内部触发，但不会触发.内部机制是什么?

Bootply at http://bootply.com/96527 , you can see that outside select2 the hover event does fire however inside select2 it doesn't. What's the mechanism inside?

推荐答案

select2.js具有.show函数，只要将鼠标悬停在选项上，它就会更新属性"aria- describeby".此功能可以扩展...

select2.js has a function, .show, which updates the attribute "aria-describedby" whenever you hover over an option. This function can be extended...

jsfiddle示例

c.prototype.show = function() {
    var b = a.Event("show.bs." + this.type);
    this.$element.trigger(b);
    var d = a.contains(this.$element[0].ownerDocument.documentElement, this.$element[0]);
    if (b.isDefaultPrevented() || !d) return;
    var e = this,
        f = this.tip(),
        g = this.getUID(this.type);
    /*look for the select box and find the 'onmouseover' attribute */
    var s = this.$element.siblings('select');

    if (s != undefined && s.attr('onmouseover') != undefined) {
        var m = s.attr('onmouseover');
        eval(m);
   }
   ...
}

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