how to create a generator in javascript code example

Example 1: generators in javascript

function* g(){    //or function *g(){}
  console.log("First");
  yield 1;
  console.log("second");
   yield 2;
  console.log("third");
} 
let generator=g();
generator.next();
generator.next();

Example 2: function generator js

function* name([param[, param[, ... param]]]) {
   statements
}