es6 for of

//for of 用来遍历 set map generator 

var engines = new Set(["Gecko", "Trident", "Webkit", "Webkit"]);

for (var e of engines) {

  console.log(e);

}

var es6 = new Map();

es6.set("edition", 6);

es6.set("committee", "TC39");

es6.set("standard", "ECMA-262");

for (var [name, value] of es6) {

  console.log(name + ": " + value);

}

function* gen(){
yield 1;
yield 2;
yield 3;

}

var g=gen()

for(var a of g){
console.log(a);

}