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

Try sprintf library (a complete open source JavaScript sprintf implementation). For example:

vsprintf('The first 4 letters of the english alphabet are: %s, %s, %s and %s', ['a', 'b', 'c', 'd']);

vsprintf takes an array of arguments and returns a formatted string.