从Dom元素获取CSS路径 [英] Get CSS path from Dom element
本文介绍了从Dom元素获取CSS路径的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我得到这个函数得到一个cssPath:
var cssPath = function(el){
var path = [];
while(
(el.nodeName.toLowerCase()!='html')&&
(el = el.parentNode)&&
path.unshift .nodeName.toLowerCase()+
(el.id?'#'+ el.id:'')+
(el.className?'。'+ el.className.replace(/ \ s + / g,。):''))
);
return path.join(>);
}
console.log(cssPath(document.getElementsByTagName('a')[123]));
但我有这样的:
html> body> div#div-id> div.site> div.clearfix> ul.choices> li
但完全正确,它应该看起来像这样:
html> body> div#div-id> div.site:nth-child(1)> div.clearfix> ul.choices> li:nth-child
有人想在JavaScript中实现它吗?
解决方案要始终获得正确的元素,您需要使用
:nth-child()
或:nth- of-type()
用于不唯一标识元素的选择器。所以试试这个:var cssPath = function(el){
if(! ;
var path = [];
while(el.nodeType === Node.ELEMENT_NODE){
var selector = el.nodeName.toLowerCase();
if(el.id){
selector + ='#'+ el.id;
} else {
var sib = el,nth = 1;
while(sib.nodeType === Node.ELEMENT_NODE&&(sib = sib.previousSibling)&& nth ++);
selector + =:nth-child(+ nth +);
}
path.unshift(selector);
el = el.parentNode;
}
return path.join(>);
}
您可以添加一个例程来检查其相应上下文中的唯一元素
TITLE
,BASE
,CAPTION
等) / p>I got this function to get a cssPath :
var cssPath = function (el) { var path = []; while ( (el.nodeName.toLowerCase() != 'html') && (el = el.parentNode) && path.unshift(el.nodeName.toLowerCase() + (el.id ? '#' + el.id : '') + (el.className ? '.' + el.className.replace(/\s+/g, ".") : '')) ); return path.join(" > "); } console.log(cssPath(document.getElementsByTagName('a')[123]));
But i got something like this :
html > body > div#div-id > div.site > div.clearfix > ul.choices > liBut to be totally right, it should look like this :
html > body > div#div-id > div.site:nth-child(1) > div.clearfix > ul.choices > li:nth-child(5)Did someone have any idea to implement it simply in javascript ?
解决方案To always get the right element, you will need to use
:nth-child()
or:nth-of-type()
for selectors that do not uniquely identify an element. So try this:var cssPath = function(el) { if (!(el instanceof Element)) return; var path = []; while (el.nodeType === Node.ELEMENT_NODE) { var selector = el.nodeName.toLowerCase(); if (el.id) { selector += '#' + el.id; } else { var sib = el, nth = 1; while (sib.nodeType === Node.ELEMENT_NODE && (sib = sib.previousSibling) && nth++); selector += ":nth-child("+nth+")"; } path.unshift(selector); el = el.parentNode; } return path.join(" > "); }
You could add a routine to check for unique elements in their corresponding context (like
TITLE
,BASE
,CAPTION
, etc.).这篇关于从Dom元素获取CSS路径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!
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