回答編集履歴
1
ちょうせい
test
CHANGED
|
@@ -1,6 +1,17 @@
|
|
|
1
1
|
```javascript
|
|
2
|
+
<script>
|
|
2
3
|
window.addEventListener('DOMContentLoaded', ()=>{
|
|
4
|
+
const keyword='ccccc';
|
|
3
|
-
const num=[...document.querySelectorAll('#Tab_container a')].map(x=>x.textContent).indexOf(
|
|
5
|
+
const num=[...document.querySelectorAll('#Tab_container a')].map(x=>x.textContent).indexOf(keyword);
|
|
4
|
-
console.log(num); //2
|
|
6
|
+
console.log(num); // 2 →hitしなければ-1になる
|
|
5
7
|
});
|
|
8
|
+
</script>
|
|
9
|
+
<div id="Tab_container">
|
|
10
|
+
<ul>
|
|
11
|
+
<li><a href="#">aaaaa</a></li>
|
|
12
|
+
<li><a href="#">bbbbb</a></li>
|
|
13
|
+
<li><a href="#">ccccc</a></li>
|
|
14
|
+
<li><a href="#">ddddd</a></li>
|
|
15
|
+
</ul>
|
|
16
|
+
</div>
|
|
6
17
|
```
|