function delay(time, callback) {
 setTimeout(function () {
 callback("Slept for "+time);
 }, time);
}

delay(1000, function(msg) {
 console.log(msg);
 delay(1200, function (msg) {
 console.log(msg);
 }
})
//...waits 1000ms
// > "Slept for 1000"
//...waits another 1200ms
// > "Slept for 1200"

'use strict';
var promiseCount = 0; 
function testPromise() {
 var thisPromiseCount = ++promiseCount;
 var log = document.getElementById('log');
 log.insertAdjacentHTML('beforeend', thisPromiseCount +') Started (<small>Sync code started</small>)<br/>');
 // 我们创建一个新的Promise，期望3秒后得到结果
 var p1 = new Promise(
 //当Promise解决或拒绝时该函数被调用
 function(resolve, reject) {
  log.insertAdjacentHTML('beforeend', thisPromiseCount +') Promise started (<small>Async code started</small>)<br/>');
  // 创建异步操作
  window.setTimeout(
  function() {
   // 满足Promise
   resolve(thisPromiseCount);
  }, Math.random() * 2000 + 1000);
  });
  // 当Promise被满足时执行
  p1.then(
  // 输出信息和值
  function(val) {
   log.insertAdjacentHTML('beforeend', val +') Promise fulfilled (<small>Async code terminated</small>)<br/>');
  })
  .catch(
  // 当Promise被拒绝时执行
   function(reason) {
   console.log('Handle rejected promise ('+reason+') here.');
   });
  log.insertAdjacentHTML('beforeend', thisPromiseCount +') Promise made (<small>Sync code terminated</small>)<br/>');
}

$("button").bind( "click", function() {
 $("p").append( "Started...");
 $("div").each(function( i ) {
 $( this ).fadeIn().fadeOut( 1000 * (i+1) );
 });
 $( "div" ).promise().done(function() {
 $( "p" ).append( " Finished! " );
 });
});

$.get('/getdata',{
 success:onSuccess,
 failure:onFailure,
 always:onAlways
});

var promise = $.get('/getdata');
promise.done(onSuccess);
promise.fail(onFailure);
promise.always(onAlways);

function* quips(name) {
 yield "hello " + name + "!";
 yield "i hope you are enjoying the blog posts";
 if (name.startsWith("X")) {
 yield "it's cool how your name starts with X, " + name;
 }
 yield "see you later!";
}

> var iter = quips("jorendorff");
 [object Generator]
> iter.next()
 { value: "hello jorendorff!", done: false }
> iter.next()
 { value: "i hope you are enjoying the blog posts", done: false }
> iter.next()
 { value: "see you later!", done: false }
> iter.next()
 { value: undefined, done: true }

function* myDelayedMessages() {
 /* delay 1000 ms and print the result */
 /* delay 1200 ms and print the result */
}

function* myDelayedMessages() {
 console.log(delay(1000, function(){}));
 console.log(delay(1200, function(){}));
}

function* myDelayedMessages() {
 console.log(yield delay(1000, function(){}));
 console.log(yield delay(1200, function(){}));
}

function run(generatorFunction) {
 var generatorItr = generatorFunction(resume);
 function resume(callbackValue) {
 generatorItr.next(callbackValue);
 }
 generatorItr.next()
}

run(function* myDelayedMessages(resume) {
 console.log(yield delay(1000, resume));
 console.log(yield delay(1200, resume));
})
//...waits 1000ms
// > "Slept for 1000"
//...waits 1200ms
// > "Slept for 1200"