获取所选文本开头(和结尾)的父元素

问题描述

假设我有这个HTML

Suppose I have this HTML

<div id="someparent">
     Foo
     <span id="one">Selection starts anywhere inside here</span>
     <span id="two">Selection ends anywhere inside here</span>
     <span id="three">Some more text here</span>
     Bar
</div>

我想返回跨度#one和跨度#two节点(以便我可以在它们周围进一步包裹跨度*).如果foo和bar是选择的起点和终点，则将返回div #someparent(两次).

I want to return the span #one, and span #two nodes (so that I can wrap a further span round them*). If foo and bar are the start and end points of the selection, div #someparent would be returned (twice).

*即使使用jQuery，如何执行此操作也将有所帮助.

*How to do this would be helpful too even if with jQuery.

这类似于此问题，要求整体的单亲选择的文字.

推荐答案

此代码将返回所选内容的开始和结束的父节点:

This code will return the parent nodes of the start and end of the selection:

var getSelectionParents=function(){
    var selection=document.getSelection();
    if(!selection.toString().length)
        return false;
    else
        return {
            start:selection.anchorNode.parentNode,
            end:selection.focusNode.parentNode
        };
}

document.addEventListener('mouseup',function(){
    console.log(getSelectionParents());
});

这是运行中的代码的JSFiddle: http://jsfiddle.net/jaredcrowe/wh1p3ncu/.

Here's a JSFiddle of the code in action: http://jsfiddle.net/jaredcrowe/wh1p3ncu/.

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