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dateDropper Javascript
A full list of JavaScript operators with examples

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Diagnose why Google won't index your page. Checks robots.txt, canonicals, content quality, sitemaps, and AI visibility in one scan. No account needed.

Which is more popular?
Based on our record, JavaScript Operator Lookup seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | joshwcomeau.com | isitindexed.com |
| Pricing | — | |
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What each product offers, as listed by its team.


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As answered by people managing JavaScript Operator Lookup and IsItIndexed.
IsItIndexed's answer:
Most SEO tools tell you whether a page is indexed. That's a yes/no answer, and if you already know your page isn't indexed, it tells you nothing. IsItIndexed runs 13 diagnostic checks to figure out why Google won't index your page and what to fix first. It also checks whether AI platforms like ChatGPT, Claude, and Perplexity can find and cite your content. No other single-URL tool combines Google indexability diagnostics with AI visibility checks.
IsItIndexed's answer:
IsItIndexed's answer:
Site owners, solo founders, bloggers, and freelance SEOs who are stuck in "Crawled, currently not indexed" limbo in Google Search Console. People who know something is wrong but don't have an SEO team to diagnose it. Also useful for anyone who wants to check whether AI search engines can actually find their content.
IsItIndexed's answer:
Google's June 2025 core update pruned an estimated 15-20% of the index. More pages than ever are stuck in "crawled but not indexed" and existing tools only check whether you're indexed, not why. At the same time, AI crawlers showed up and nobody had tooling to check visibility across those platforms either. I built IsItIndexed to close both gaps in one scan.
IsItIndexed's answer:
Share your experience with using JavaScript Operator Lookup and IsItIndexed. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


If you replace your || with ?? You should get the behaviour you are after. This is a good reference for what the operators do in js: https://joshwcomeau.com/operator-lookup. Source: about 5 years ago
Tracking IsItIndexed since Mar 2026.
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