Select all SPAN elements which contain a "foobar" property? If possible with jQuery

[pstein]

How can I select (from Tampermonkey script) all SPAN elements in current webpage which contain a property "foobar"?

The assigned value is unimportant.

So elements like the following should be matched:

<span aaa="bbb" foobar="23452345" .....>...</span>

I tried:

$('span[foobar^=""]').remove();

but it didn't work.

And

$('span').attr('foobar').remove();

didn't work either.

[7nik]

To use $ (jQuery), you need to add it to the userscript:

// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js

or use document.querySelectorAll().

[pstein]

Yes, I already added:

// @require http://code.jquery.com/jquery-latest.js

So this is not the problem/solution

[7nik]

* jQuery JavaScript Library v1.11.1
* Date: 2014-05-01T17:42Z

It's more ancient than mammoths.

[7nik]

// @require http://code.jquery.com/jquery-latest.js

It seems to work. Can you provide an entire minimal userscript where it doesn't work?

[pstein]

Hmm, interesting.

However your suggested cloudflare URL contains a version number ("v3.2.1")
Is there a version number independent cloudflare URL which redirects to always the latest jQuery library (similar to my URL)?

[7nik]

here you can choose a link with a loose version https://www.jsdelivr.com/package/npm/jquery

but it seems something is wrong with your environment and jQuery cannot define $