Question about using ${}

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1

I have a page where we are collecting user information. I found some code that takes some of that information and includes it in an email. I am trying to understand what the

${}

does in this case

${$w('#fullnameInput').value}

How is this different from

 $w('#fullnameInput').value
2

The ${} notation is used in Template literals (Template strings) and is a feature of Javascript.

3

Thanks, that helps.