Performance test stuff

Question

I’m curious what the fastest way to find if a string includes another string is. there are some sources online but they all have different answers

So which one of these (or others I haven’t included) would be the best performance?

Var g = ‘hello world’;

solution 1: g.includes(‘z’)
solution 2: g.indexOf(‘z’) != -1
solution 3: /z/.test(g)

Answer 1

https://code.sololearn.com/c96P417pMDwc/?ref=app

Answer 2

for premformence, Regex (3) is the fastes
it is the most used for large data tests