I'm sorry for question, because I can't google it (I don't know name of this feature) and can't find it in documentation for script tag. I found it in linkedin API:
<script src="https://someurl.com">
a : 10
b : 20
c : 30
</script>
What is this? It looks like passing parameters to script, but it was not mentioned in any question like "passing parameters to script"