实现一个LazyMan，可以按照以下方式调用:
LazyMan(“Hank”)
输出:Hi! This is Hank!
LazyMan(“Hank”).sleep(10).eat(“dinner”)
输出Hi! This is Hank!
//等待10秒..
Wake up after 10
Eat dinner~
LazyMan(“Hank”).eat(“dinner”).eat(“supper”)
输出
Hi This is Hank!Eat dinner~
Eat supper~
LazyMan(“Hank”).sleepFirst(5).eat(“supper”)
输出
//等待5秒
Wake up after 5
Hi This is Hank!
Eat supper
以此类推。
function Lazyman(name) {
const self = this;
self.tasks = [];
let fn = (function (n) {
let name = n
return function () {
console.log(`Hi This is ${name}`);
self.next();
}
})(name);
self.tasks.push(fn);
setTimeout(function () {
self.next();
},0);
}
Lazyman.prototype = {
next() {
const self = this;
let fn = self.tasks.shift();
fn && fn();
},
sleep(time) {
const self = this;
let fn = (function (time) {
return function () {
setTimeout(function () {
console.log(`Wake up after ${time}`)
self.next();
},time * 1000)
}
})(time);
self.tasks.push(fn);
return self;
},
eat(food) {
const self = this;
let fn = (function (food) {
return function () {
console.log(`Eat ${food}~`)
self.next()
}
})(food);
self.tasks.push(fn);
return self;
},
run(num) {
const self = this;
let fn = (function (num) {
return function () {
console.log(`Run ${num}~`);
self.next();
}
})(num);
self.tasks.push(fn);
return self;
},
fistSleep(time) {
const self = this
let fn = function (time) {
return function () {
setTimeout(function () {
console.log(`sleep ${time}`)
self.next()
}
,time * 1000)
}
}(time)
self.tasks.unshift(fn)
return self
}
}
function _lazyman(name) {
return new Lazyman(name);
}
_lazyman('lay-man').sleep(2).eat('mian').run(1100).fistSleep(3);
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