Use variables inside a string in lua

Question

In javascript we can do the following:

var someString = `some ${myVar} string`

I have the following lua code, myVar is a number that needs to be in the square brackets:

splash:evaljs('document.querySelectorAll("a[title*=further]")[myVar]')

Answer 1

Function that fits your description is string.format:

splash:evaljs(string.format('document.querySelectorAll("a[title*=further]")[%s]', myVar))

It is not as verbose as ${}. It is more of a good old (and hated) sprintf.