Add a text under the first post?

I'm using this script to add some text under the first post on every topic page but it doesn't work.

Code:

$(function(){
$('.post:first-child').after('<div class="fs-spotlight">Hello member and welcome to Forum Services!</div>');
});

Good evening!

1) Because you can't work with pseudo classes in JS/jQuery
2) Because the after method inserts elements, not HTML code.

To insert HTML code you need to use the insertAdjacentHTML method, which has no analogue in jQuery

Correct code:

Code:

$(document).ready(function() {
  document.querySelectorAll('.post')[0].insertAdjacentHTML('afterend', '<div class="fs-spotlight">Hello member and welcome to Forum Services!</div>');
});

Result:

Thanks, can you also check your pm.

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