fib-generator tags: #ES6

fib.js

function* fib(){
  let a=1, b=1
  yield a
  yield b
  while(true){
    let next = a+b
    a=b
    b=next
    yield next
  }
}
let gener = fib()

for(let i of Array(10).keys()){
  console.log(gener.next().value)
}