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js如何获取一个DOM元素的xpath

如题?
请问有直接的API吗?
如果没有,在遇到页面嵌套iframe的时候如何获取?


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1 Answer

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by (71.8m points)

看一下这个链接:

function getPathTo(element) {
    if (element.id!=='')
        return 'id("'+element.id+'")';
    if (element===document.body)
        return element.tagName;

    var ix= 0;
    var siblings= element.parentNode.childNodes;
    for (var i= 0; i<siblings.length; i++) {
        var sibling= siblings[i];
        if (sibling===element)
            return getPathTo(element.parentNode)+'/'+element.tagName+'['+(ix+1)+']';
        if (sibling.nodeType===1 && sibling.tagName===element.tagName)
            ix++;
    }
}

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