JavaScript使用yield模拟多线程的方法

function Thread( name ) {  for ( var i = 0; i < 5; i++ ) {    Print(name+': '+i);    yield;  }}//// thread managementvar threads = [];// thread creationthreads.push( new Thread('foo') );threads.push( new Thread('bar') );// schedulerwhile (threads.length) {  var thread = threads.shift();  try {    thread.next();    threads.push(thread);  } catch(ex if ex instanceof StopIteration) {}}

foo: 0bar: 0foo: 1bar: 1foo: 2bar: 2foo: 3bar: 3foo: 4bar: 4