Include Spreadshop in your Joomla Webseite
The HTML codes I used. As you might see, it’s the same code, you already used in your html files.
EN-GB
<div id="myShop">
<a href="https://shop.spreadshirt.nl/rockbiker">rockbiker</a>
</div>
<script>
var spread_shop_config = {
shopName: 'rockbiker',
locale: 'en_GB',
prefix: 'https://shop.spreadshirt.nl',
baseId: 'myShop'
};
</script>
<script type="text/javascript"
src="https://shop.spreadshirt.nl/shopfiles/shopclient/shopclient.nocache.js">
</script>
NL
<div id="myShop">
<a href="https://shop.spreadshirt.nl/rockbiker">rockbiker</a>
</div>
<script>
var spread_shop_config = {
shopName: 'rockbiker',
locale: 'nl_NL',
prefix: 'https://shop.spreadshirt.nl',
baseId: 'myShop'
};
</script>
<script type="text/javascript"
src="https://shop.spreadshirt.nl/shopfiles/shopclient/shopclient.nocache.js">
</script>
That approach is a quite simple one, but you can improve it by using the multi-language capabilities of Joomla.
Notes
During installation, you have the option to activate multi-language:
I did that and imported demo data, so I have a language selection on top of my demo-site:
So the customer can switch between languages “instead” of choosing it from the menu. But lastly it’s just a redirect…
If you enabled the multi-language setting, you can switch the language in the editor and link the shop-article pages:
The most difficult thing here was to enable html/javascript code in the editors, that’s why I used JCE, which allows using javascript-code by default by simply disabling it with that button:
But by enabling the editor again, the code may disappear, so if you want to have additional content on that page, please write it in the editor, then switch it off and paste the javascript code.
Depending on your experiences and knowledge, you could either create your own plugin or module or use another custom html
plugin or module, which allows javascript.
Please let me know if you need more details, or the video is too fast and so on 
P.s. to be honest, I’m more a Wordpress guy, so if here are some Joomla guys/gals, which can improve the steps above, feel free 