Uncaught TypeError: undefined is not a promise

Question

I got error of Uncaught TypeError: undefined is not a promise

const p = Promise((resolve, reject) => {   resolve('ok') })  p.then(resp => console.log(resp)) 

https://jsbin.com/daluquxira/edit?js,console,output

what's wrong with above code?

Answer 1

You need to instantiate the Promise.

In this case:

const p = new Promise((resolve, reject) => {    resolve('ok')  })    p.then(resp => console.log(resp))