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JavaScript jQuery Basics Understanding jQuery Events and DOM Traversal Adding New Elements to the DOM

Libor Gess
Libor Gess
6,880 Points

The append method is not working?

I am doing same practicing on my machine and I cannot append element. But When I change the selector from this $(".columns is-multiline") to this: $("body") it's work. Could someone please explain what I am doing wrong? Thank you very much.

Here is my html:

<!DOCTYPE html>
    <title>App of Coffee</title>
  <meta charset="UTF-8">
    <link rel="stylesheet" type="text/css" href="css/style.css">

<div class="container is-mobile">

    <!--start here -->
    <div class="columns is-multiline">


<script src="js/jquery.js"></script>
<script src="js/test.js"></script>

And here is my test.js file:

$(".columns is-multiline").append('<p>');
Libor Gess
Libor Gess
6,880 Points

I find out why. It looks like the jQuery selectors doesn't like spaces between css selectors!


$(".columns is-multiline").append('<p>');

This would be a descendant combinator if there was a period before "is-multiline". But there is no descendant in your code with the class "is-multiline". I you want to target an element with both classes "columns" and "is-multiline" you have to write:


(cf. last example in https://www.w3.org/TR/2018/REC-selectors-3-20181106/#class-html)

1 Answer

Libor Gess
Libor Gess
6,880 Points

Hi, ohhh yes that simple explanation. Thank you very much :)

You're welcome.