Confused about how to utilize the variable `${PORT}`?

Currently, I am following a tutorial in which the instructor inputs the following code snippet:

let PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
    console.log('Server beating 💓 on PORT ${PORT}'); 
})

However, he receives the output "Server beating <3 on PORT 3001"

When I use the same code, the ${ } syntax does not work as expected. Could it be because I am not on a Linux system? Should I be using a different approach?

Answer â„–1

Consider utilizing backticks instead of apostrophes as demonstrated below:

app.listen(PORT, () => {
    console.log(`Server running smoothly on PORT ${PORT}`); 
})

By the way, the backtick symbol is located above the tab key on your keyboard

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