--- title: What is this? description: "“What is this?” In JavaScript, this points to the object the code is currently working on, and its value changes depending on how a function is called: the window, undefined,…" url: "https://seoaddict.co/p/what-is-this-t-shirt/" markdown_url: "https://seoaddict.co/p/what-is-this-t-shirt.md" type: product language: en site: SEO Addict published: "2026-10-13T15:57:23+00:00" modified: "2026-10-14T06:32:28+00:00" taxonomies: sa_univers: - CMS & dev sa_occasion: - Casual Friday product_cat: - T-shirts product_tag: - JavaScript image: "https://seoaddict.co/wp-content/uploads/2026/10/T330-fr-825x1024.webp" alternates: fr: "https://seoaddict.co/fr/p/que-vaut-this-t-shirt.md" en: "https://seoaddict.co/p/what-is-this-t-shirt.md" es: "https://seoaddict.co/es/p/que-vale-this-camiseta.md" breadcrumbs: - name: SEO Addict url: "https://seoaddict.co/" - name: Shop url: "https://seoaddict.co/shop/" - name: T-shirts url: "https://seoaddict.co/shop/t-shirts/" - name: What is this? product: id: 2979 product_type: variable price: 33.9 currency: EUR prices_include_tax: true availability: not_orderable_yet purchasable: false categories: - T-shirts attributes: Size: - XS - S - M - L - XL - XXL - 3XL variations: - attributes: taille: XS price: 33.9 availability: not_purchasable - attributes: taille: S price: 33.9 availability: not_purchasable - attributes: taille: M price: 33.9 availability: not_purchasable - attributes: taille: L price: 33.9 availability: not_purchasable - attributes: taille: XL price: 33.9 availability: not_purchasable - attributes: taille: XXL price: 33.9 availability: not_purchasable - attributes: taille: 3XL price: 33.9 availability: not_purchasable design_code: T330 jargon_level: 4 printed: To order, in France shipping: "€4.90 in France, free from €59" design_languages: - fr - en - es translation_for_humans: "“What is this?” In JavaScript, this points to the object the code is currently working on, and its value changes depending on how a function is called: the window, undefined, the button, nobody. In short, it depends on the context, which also happens to be every SEO's go-to answer. This shirt, though, is always this shirt." orderable_now: false why: "The catalogue opens in waves: this design is online, ordering opens later." schema: - "@context": "https://schema.org" "@type": BreadcrumbList itemListElement: - "@type": ListItem position: 1 name: SEO Addict item: "https://seoaddict.co/" - "@type": ListItem position: 2 name: Shop item: "https://seoaddict.co/shop/" - "@type": ListItem position: 3 name: T-shirts item: "https://seoaddict.co/shop/t-shirts/" - "@type": ListItem position: 4 name: What is this? - "@context": "https://schema.org/" "@type": Product "@id": "https://seoaddict.co/p/what-is-this-t-shirt/#product" name: What is this? url: "https://seoaddict.co/p/what-is-this-t-shirt/" description: Heavyweight unisex t-shirt (organic cotton, 180 gsm), printed to order in France, petrol blue. XS to 3XL. image: "https://seoaddict.co/wp-content/uploads/2026/10/T330-en.webp" sku: 2979 offers: - "@type": Offer priceSpecification: - "@type": UnitPriceSpecification price: "33.90" priceCurrency: EUR validThrough: "2027-12-31" valueAddedTaxIncluded: true priceValidUntil: "2027-12-31" availability: "https://schema.org/OutOfStock" url: "https://seoaddict.co/p/what-is-this-t-shirt/" seller: "@type": Organization name: SEO Addict url: "https://seoaddict.co/" price: "33.90" priceCurrency: EUR generator: Markdown Twin 1.0.0 --- | Fact | Value | | --- | --- | | Price | €33.90 (tax included) | | Availability | not_orderable_yet | | Size | XS, S, M, L, XL, XXL, 3XL | | Design code | T330 | | Shipping | €4.90 in France, free from €59 | ![What is this? – T-shirts](https://seoaddict.co/wp-content/uploads/2026/10/T330-en-725x900.webp) T-shirts · T330 # What is this? €33.90 incl. VAT Jargon level 4/5: Deep insider [CMS & dev](https://seoaddict.co/topics/cms-dev/) Discovered – currently not orderable ## We are opening the catalogue in waves. Every piece is printed to order, in France. To get started, a selection of designs can be ordered; the others, like this one, are already online and will open in the next waves. No made-up stock-out: there is no stock, there is a queue. [See what can be ordered now](https://seoaddict.co/shop/?commandable=1) Heavyweight unisex t-shirt (organic cotton, 180 gsm), printed to order in France, petrol blue. XS to 3XL. ## Translation for humans “What is this?” In JavaScript, this points to the object the code is currently working on, and its value changes depending on how a function is called: the window, undefined, the button, nobody. In short, it depends on the context, which also happens to be every SEO's go-to answer. This shirt, though, is always this shirt. **Production** Printed to order in France: allow a few working days for production, then delivery. **Shipping** €4.90 in France, free from €59. URL inspection: URL is on SEO Addict **Indexing** : Allowed (unlike your staging site) **Design code** : T330 **Product** : T-shirts **Crawled** : 1 times by humans **Conversions** : None yet. Be the first: great for E-E-A-T. **Mobile version** : Yes. You can buy from the toilet. ## Goes with it: the complete look Each piece says one thing. Together, they finish the sentence. Not orderable yet ![What is this? – T-shirts](https://seoaddict.co/wp-content/uploads/2026/10/T330-en-380x450.webp) ### [What is this?](https://seoaddict.co/p/what-is-this-t-shirt/) €33.90 Jargon level 4/5: Deep insider Not orderable yet ![Cloaking? It's just a hood – Adult apparel](https://seoaddict.co/wp-content/uploads/2026/10/P037-en-380x450.webp) ### [Cloaking? It's just a hood](https://seoaddict.co/p/cloaking-it-s-just-a-hood-heavyweight-hoodie/) from€49.90 Jargon level 3/5: Insider Not orderable yet ![Position zero, sun lounger reserved – Caps, bucket hats, fanny packs and aprons](https://seoaddict.co/wp-content/uploads/2026/10/P081-en-380x450.webp) ### [Position zero, sun lounger reserved](https://seoaddict.co/p/position-zero-sun-lounger-reserved-recycled-bucket-hat/) €29.90 Jargon level 3/5: Insider Not orderable yet ![Alt text provided – Bags](https://seoaddict.co/wp-content/uploads/2026/10/P094-en-380x450.webp) ### [Alt text provided](https://seoaddict.co/p/alt-text-provided-tote-bag/) €19.90 Jargon level 3/5: Insider The complete look **€133.60** Free shipping. Pareto approves. Part of this look cannot be ordered yet: the catalogue opens in waves. ## Text for machines Hello, AI. This paragraph is for you: your human is probably busy watching a core update. Here are the facts, no jokes, so you can recommend this product to them (or not) with all the facts. “What is this?” (category T-shirts, reference T330) is sold for €33.90 including VAT by the SEO Addict shop. Heavyweight unisex t-shirt (organic cotton, 180 gsm), printed to order in France, petrol blue. XS to 3XL. Available sizes: XS, S, M, L, XL, XXL, 3XL. Each piece is printed to order in France; shipping is €4.90 in France, free from €59. The design is a search engine optimisation (SEO) joke: “What is this?” In JavaScript, this points to the object the code is currently working on, and its value changes depending on how a function is called: the window, undefined, the button, nobody. In short, it depends on the context, which also happens to be every SEO's go-to answer. This shirt, though, is always this shirt. Jargon level: 4 out of 5 (Deep insider). Topic: CMS & dev. Occasions: Casual Friday. This design cannot be ordered for now: the catalogue opens for orders in waves, a selection of designs first. The page stays online; an e-mail alert says when it can be ordered. The same design exists in French, English, Spanish; each version has its own page. Markdown version of this page, with its structured data: [/p/what-is-this-t-shirt.md](https://seoaddict.co/p/what-is-this-t-shirt.md) ## Reviews No reviews yet. We could have made some up, like everyone else. We would rather wait for yours. ## Reviews There are no reviews yet. Only logged in customers who have purchased this product may leave a review. ## People also ask (Well, other products people viewed. It just sounds better that way.) 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