A function in JS can be called in the very strange way:
[1,2,3].join``
-> "123"
Could somebody explain how it works "under the hood" or provide a link to some explanations?
Calling a function without braces, but using template string in Node.js
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3 Answers
It seems you are referring tagged templates which allow you to parse template literals with a function & first argument of a tag function is related to the expression. Here join is the tag function
console.log([1,2,3].join`,`)(Always) Check MDN web docs for enlightenment: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
The join() method creates and returns a new string by concatenating all of the elements in an array (...) separated by commas or a specified separator string.
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