要求如下：
代码语言：javascript复制Person("Li");
// 输出： Hi! This is Li!
Person("Dan").sleep(10).eat("dinner");
// 输出：
// Hi! This is Dan!
// 等待10秒..
// Wake up after 10
// Eat dinner~
Person("Jerry").eat("dinner").eat("supper");
// 输出：
// Hi This is Jerry!
// Eat dinner~
// Eat supper~
Person("Smith").sleepFirst(5).eat("supper");
// 输出：
// 等待5秒
// Wake up after 5
// Hi This is Smith!
// Eat supper代码如下：
代码语言：javascript复制function Person2(name){
this.isRunFlag = false;
this.name = name;
this.taskArr = [];
function task (name) {
console.log(`Hi! This is ${name}!`);
}
this.taskArr.push(task.bind(this, name));
this.run()；
}
Person2.prototype.eat = function (food) {
const task = food => {
console.log(`Eat ${food}~`);
}
this.taskArr.push(task.bind(this, food));
this.run();
return this;
}
Person2.prototype.sleep = function (time) {
const task = new Promise((resolve, reject) => {
setTimeout(() => {
console.log(`Wake up after ${time}`);
resolve();
}, time * 1000);
})
this.taskArr.push(task);
this.run();
return this;
}
Person2.prototype.sleepFirst = function (time) {
const task = new Promise((resolve, reject) => {
setTimeout(() => {
console.log(`Wake up after ${time}`);
resolve();
}, time * 1000);
})
this.taskArr.unshift(task);
this.run();
return this;
}
Person2.prototype.run = function () {
if (this.isRunFlag) {
return;
}else{
this.isRunFlag = true;
const gogogo = () => {
if (this.taskArr.length) {
let task = this.taskArr.shift();
if (task.then) {
task.then(() => {
gogogo();
})
} else {
task();
gogogo();
}
} else {
this.isRunFlag = false;
}
}
Promise.resolve().then((res) => {
gogogo();
}).catch((error) => {
console.log("error:", error);
})
}
}
function Person(name){
return new Person2(name);
}
