Two ways of interpolation? , vs +

[ajaxjumper86527]

Hi,
what is the dfference between these two ways of interpolation, i.e. when would I use which:

console.log(‘My age is’, 30)

console.log(My age is’ + 30)

I’m pretty sure I’ve seen both the comma-option and the plus-option in the “Variable” lesson.

Thanks

[ionatan]

Neither of those are string interpolation, and both are invalid code (watch out with forum formatting)
string interpolation is replacing placeholders in the string with other strings

const bobs_age = 5;
const s = `bob is ${bobs_age} years old`;

One sends two values to console.log, the other sends a single string