假如有一段文本是:
<div><span id="id1"><a href="#">链接a</a></span><div>temp1</div></div>
<div><span id="id2"><a href="#">链接b</a></span><div>temp2</div></div>
<div><span id="id3"><a href="#">链接c</a></span><div>temp3</div></div>我要根据"id2",找到这个字符串所属的直系div,并将这个div里面的a标签的超链接文本通过分组取出来最终取出来的希望是这样的分组:$0 <div><span id="id2"><a href="#">链接b</a></span><div>temp2</div></div>
$1 链接b(第一组返回该条件字符串所属的div内容,第二组返回该div里面的超链接文本)
<div><span id="id1"><a href="#">链接a</a></span><div>temp1</div></div>
<div><span id="id2"><a href="#">链接b</a></span><div>temp2</div></div>
<div><span id="id3"><a href="#">链接c</a></span><div>temp3</div></div>我要根据"id2",找到这个字符串所属的直系div,并将这个div里面的a标签的超链接文本通过分组取出来最终取出来的希望是这样的分组:$0 <div><span id="id2"><a href="#">链接b</a></span><div>temp2</div></div>
$1 链接b(第一组返回该条件字符串所属的div内容,第二组返回该div里面的超链接文本)
var str= '<div><span id="id1"><a href="#">链接a</a></span><div>temp1</div></div><div><span id="id2"><a href="#">链接b</a></span><div>temp2</div></div><div><span id="id3"><a href="#">链接c</a></span><div>temp3</div></div>';
var re = /<div>.+?<a.+?>(.+?)<\/a>.+?<\/div>/gi;
var tmp = [];
var a = str.match(re);
for(var i = 0, len = a.length; i < len; i++){
tmp[i] = [];
tmp[i].push(a[i]);
a[i].match(re);
tmp[i].push(RegExp.$1);
}
alert(tmp.length)
alert(tmp[0][0])
alert(tmp[0][1])
alert(tmp[1][0])
alert(tmp[1][1])
alert(tmp[2][0])
alert(tmp[2][1])
var html = '<div><span id="id1"><a href="#">链接a</a></span><div>temp1</div></div>\
<div><span id="id2"><a href="#">链接b</a></span><div>temp2</div></div>\
<div><span id="id3"><a href="#">链接c</a></span><div>temp3</div></div>';function f(html, id) {
document.getElementById('demo').innerHTML = html;
var result = [];
var obj = document.getElementById(id);
if (obj.length < 1) result.push('Not found!');
else {
result.push('<div>' + obj.parentNode.innerHTML + '</div>');
result.push(obj.getElementsByTagName('a')[0].innerHTML);
}
return result;
}alert(f(html, 'id2'));
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head><body>
<div id="demo" style="display:none;"></div><script type="text/javascript">
var html = '<div><span id="id1"><a href="#">链接a</a></span><div>temp1</div></div>\
<div><span id="id2"><a href="#">链接b</a></span><div>temp2</div></div>\
<div><span id="id3"><a href="#">链接c</a></span><div>temp3</div></div>';function f(html, id) {
document.getElementById('demo').innerHTML = html;
var result = [];
var obj = document.getElementById(id);
if (obj.length < 1) result.push('Not found!');
else {
result.push('<div>' + obj.parentNode.innerHTML + '</div>');
result.push(obj.getElementsByTagName('a')[0].innerHTML);
}
return result;
}alert(f(html, 'id2'));
</script>
</body>
</html>