[javascript] What does ${} (dollar sign and curly braces) mean in a string in Javascript?

I haven't seen anything here or on MDN. I'm sure I'm just missing something. There's got to be some documentation on this somewhere?

Functionally, it looks like it allows you to nest a variable inside a string without doing concatenation using the + operator. I'm looking for documentation on this feature.

Example:

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var string = 'this is a string';_x000D_
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console.log(`Insert a string here: ${string}`);
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This question is related to javascript string variables concatenation

The answer is


You can also perform Implicit Type Conversions with template literals. Example:

let fruits = ["mango","orange","pineapple","papaya"];

console.log(`My favourite fruits are ${fruits}`);
// My favourite fruits are mango,orange,pineapple,papaya

As mentioned in a comment above, you can have expressions within the template strings/literals. Example:

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const one = 1;_x000D_
const two = 2;_x000D_
const result = `One add two is ${one + two}`;_x000D_
console.log(result); // output: One add two is 3
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