universal_html
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Published
20 hours ago •
dint-dev
dint-dev
Descendant combinator cannot be used after nth-child
Hi! Thanks for your awsome package., but I encountered some problems in the following tests. Any ideas?
index.html
<!DOCTYPE html>
<html lang="en">
<body>
<div id="root">
<div>
<p class="title">title1</p>
<p class="content">p1</p>
</div>
<div>
<p class="title">title2</p>
<p class="content">p2</p>
</div>
</div>
</body>
</html>
import 'dart:io';
import 'package:universal_html/parsing.dart';
void main() {
final file = File('index.html').readAsStringSync();
final document = parseHtmlDocument(file);
print(document.body!.querySelector('#root div:nth-child(1)'));
/*
* <div>
<p class="first">p1</p>
<p class="second">p1</p>
</div>*/
print(document.body!.querySelector('#root div:nth-child(1)>.content'));
/*
* <p class="content">p1</p>*/
print(document.body!.querySelector('#root div:nth-child(1) .content'));
/*
* Unhandled exception:
Null check operator used on a null value
#0 _matchesNthChildSelector (package:universal_html/src/html/dom/css_selectors.dart:65:37)
#1 _matchesSimpleSelector (package:universal_html/src/html/dom/css_selectors.dart:309:18)
#2 _matchesSelector (package:universal_html/src/html/dom/css_selectors.dart:148:8)
#3 _matchesSelector (package:universal_html/src/html/dom/css_selectors.dart:178:13)
#4 _matchesSelectorGroup (package:universal_html/src/html/dom/css_selectors.dart:242:9)
#5 _ElementOrDocument.querySelectorAll.<anonymous closure> (package:universal_html/src/html/dom/node.dart:763:11)
#6 _ElementOrDocument._forEachElementInTree (package:universal_html/src/html/dom/node.dart:787:10)
#7 _ElementOrDocument.querySelectorAll (package:universal_html/src/html/dom/node.dart:762:5)*/
}
