How to remove CSS Class with Tampermonkey?

Question

I am very new to CSS and javascript, so take it easy on me.

I am trying to remove the class disable-stream from each of the div elements under the div class

Answer 1

That looks to be an AJAX-driven web page, so you need to use AJAX-aware techniques to deal with it. EG waitForKeyElements, or MutationObserver, or similar.

Here's a complete script that should work:

// ==UserScript==
// @name     _Remove a select class from nodes
// @match    *://app.hubspot.com/reports-dashboard/*
// @match    *://app.hubspot.com/sales-notifications-embedded/*
// @require  http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js
// @require  https://gist.github.com/raw/2625891/waitForKeyElements.js
// @grant    GM_addStyle
// ==/UserScript==
//- The @grant directive is needed to restore the proper sandbox.
console.log ("Do you see this?");

waitForKeyElements (".disable-stream", removeDSclass);

function removeDSclass (jNode) {
    console.log ("Cleaned node: ", jNode);
    jNode.removeClass ("disable-stream");
}

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Note that there are two @match statements because the nodes, that the OP cared about, turned out to be in an iframe.