How can I do string interpolation in JavaScript?

Question

Consider this code:

var age = 3;

console.log(\"I\'m \" + age + \" years old!\");

Are there any other ways to insert the value of a variabl

Answer 1

Since ES6, if you want to do string interpolation in object keys, you will get a SyntaxError: expected property name, got '${' if you do something like:

let age = 3
let obj = { `${age}`: 3 }

You should do the following instead:

let obj = { [`${age}`]: 3 }