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JavaScript jQuery Basics Understanding jQuery Events and DOM Traversal DOM Traversal with jQuery

Posted by Clayton Batchelor
Clayton Batchelor
5,817 Points

$('li).eq(2).prev(2);?

I can get the problem to this equation i have tried many different ways. It asks 'You've just learned about the next() and prev() methods. Use one of them to traverse from Wade Christensen to James McAvoy in the list of students.'

Then says.

Bummer! Did you unintentionally supply arguments to the "prev" method call on the jQuery object with a selector of "li"?

index.html 
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Document</title>
</head>
<body>
  <h2>Student List</h2>

  <ul class="student-list">
    <li>James McAvoy</li>
    <li>Alena Holligan</li>
    <li>Wade Christensen</li>
    <li>Matt Krzyzynski</li>
  </ul>

  <script src="jquery-3.2.1.min.js"></script>
  <script src="app.js"></script>
</body>
</html>
app.js 
$('li').eq(2).prev(2);

4 Answers

Spencer Bigum
Spencer Bigum
3,250 Points
Spencer Bigum
Spencer Bigum
3,250 Points

Try this:

$('li').eq(2).prev('li').prev('li');

Seems like prev() only can make one step at a time.

Clayton Batchelor
Clayton Batchelor
5,817 Points

Ohhhhh so your supposed to call prev out. I thought you were supposed to put a number in there. Thank's for your help well appreciated.

Paul Janson
Paul Janson
Courses Plus Student 2,670 Points
Paul Janson
Paul Janson
Courses Plus Student 2,670 Points

I was not able to get the above answer to run. This, however, managed to squeeze through.

app.js 
$('li').eq(2).prev().prev();
Terri Valentine
Terri Valentine
23,034 Points

Thank you very much, Paul Janson. I have been sitting here stuck on this for awhile.

David Ryan
PLUS
David Ryan
Courses Plus Student 14,981 Points
David Ryan
David Ryan
Courses Plus Student 14,981 Points

I don't understand why ya'll used prev.().

I just did:

$('li').eq(2)
David Ryan
David Ryan
Courses Plus Student 14,981 Points

Unless that was for the second task...

Devin Kelly
Devin Kelly
7,343 Points
Devin Kelly
Devin Kelly
7,343 Points

There has to be a way to use an integer in there right? What if you had to do .prev() 7 times?

joseppi
joseppi
11,738 Points
joseppi
joseppi
11,738 Points

Have you checked any references for shortcuts? I was wondering the same thing.

HIDAYATULLAH ARGHANDABI
HIDAYATULLAH ARGHANDABI
21,058 Points
HIDAYATULLAH ARGHANDABI
HIDAYATULLAH ARGHANDABI
21,058 Points

the prev() method both times should be empty

Enjoy Coding