Do complex JavaScript menus really block the indexing of your navigation?

Why does Google emphasize anchor and href tags?

Google crawls the web by following traditional HTML links. Even though Googlebot now executes JavaScript, its discovery mechanism relies on tags with a href attribute pointing to a URL.

When navigation is built with complex JavaScript events (onclick, onmouseover) without generating a real tag, the bot does not see a link to follow. It will not guess that a click on a

opens a menu: it scans the DOM and looks for hrefs.

What constitutes a complex interaction in this context?

Martin Splitt targets dropdown menus that activate only on hover or click, without exposing direct links in the source code. For example: a mega-menu that loads its links via an AJAX call on hover, or worse, a navigation system that dynamically injects URLs after authentication.

The trap is that these navigations work perfectly for the user, but Googlebot sees only a button or an empty

. The result: entire sections of the site remain orphaned or require multiple crawls to be discovered.

What is the concrete risk for indexing?

If your main navigation does not generate traditional links, Google will have to rely on other signals to discover your pages: XML sitemaps, internal links from the content, external backlinks. This means you lose control over crawl and indexing depth.

Pages located more than 3-4 clicks away from a real link may never be crawled regularly. And if they are crawled, it will be with a considerable delay, which is problematic for time-sensitive content.

Google follows tags with href, not isolated JavaScript events
Complex menus without real links create blind spots for the bot
The major risk: loss of control over crawl budget and indexing depth
A compliant navigation accelerates discovery and reduces reliance on XML sitemaps

SEO Expert opinion

Is this statement consistent with field observations?

Yes, and it’s even a welcome reminder. In 2018-2019, Google communicated extensively about its ability to execute modern JavaScript, which created the impression that everything had become magic. The reality is more nuanced: Googlebot can execute JS, but it remains fundamentally a bot that follows links.

Audits of Angular, React, or Vue sites often reveal crawl issues related to navigation that is too reliant on application state. Conditional links, menus that load after a delay, or empty hrefs with client-side routers create black holes for the bot. [To be verified]: Google has never published quantitative data on the crawl failure rate associated with complex JavaScript navigations, so it's difficult to precisely quantify the impact.

What nuances should be added to this advice?

Martin Splitt mentions “appropriate links,” but remains vague on certain edge cases. For instance, are links dynamically generated on first render on the client-side problematic? If your framework injects tags into the DOM before Googlebot starts indexing, it should technically be fine.

The real issue lies with interactions that require a user event to reveal links: hover, click, scroll. In such cases, Google will not simulate these interactions exhaustively. It crawls the DOM as it finds it after the first render, period.

In what cases does this rule not fully apply?

If your site benefits from a very high crawl budget and a dense internal linking elsewhere (content, sidebar, footer), you may get away with complex JS navigation. Google will eventually discover your pages through other paths.

But relying on this is playing with fire. Let's be honest: prioritizing traditional links in the main navigation remains the most robust strategy, one that does not depend on the goodwill of the bot or your crawl budget.

Be cautious of Single Page Applications (SPA) that use a JavaScript router without server-side rendering: if your hrefs point to internal routes like #/products without a real URL, Google will not follow them as distinct links.

Practical impact and recommendations

What concrete steps should be taken to make navigation crawlable?

First, audit your current navigation. Disable JavaScript in your browser (or use a non-JS crawler like Screaming Frog in standard mode) and check if your main menus still display clickable links. If the answer is no, you have a problem.