1. function machine() {
    3. }
    4. machine('ygy').execute() 
    5. // start ygy
    6. machine('ygy').do('eat').execute(); 
    7. // start ygy
    8. // ygy eat
    9. machine('ygy').wait(5).do('eat').execute();
    10. // start ygy
    11. // wait 5s（这里等待了5s）
    12. // ygy eat
    13. machine('ygy').waitFirst(5).do('eat').execute();
    14. // wait 5s
    15. // start ygy
    16. // ygy eat
    1. function machine(name){
    2.     return new Machine(name);
    3. }
    5. function Machine(name){
    6.     this.name = name;
    7.     this.actions = [];
    8.     this.init();
    9. }
    10. Machine.prototype.init = function(){
    11.     this.actions.push(`start ${this.name}`)
    12. }
    14. Machine.prototype.wait = function(seconds){
    15.     this.actions.push(function(){
    16.         return new Promise((resolve) => {
    17.             console.log(`wait ${seconds}s`)
    18.             setTimeout(()=>{resolve(seconds)},seconds*1000)
    19.         })
    20.     })
    21.     return this
    22. }
    23. Machine.prototype.waitFirst = function(seconds){
    24.     this.actions.unshift(function(){
    25.         return new Promise((resolve) => {
    26.             console.log(`wait ${seconds}s`)
    27.             setTimeout(()=>{resolve(seconds)},seconds*1000)
    28.         })
    29.     })
    30.     return this
    31. }
    32. Machine.prototype.do = function(action){
    33.     this.actions.push(`${this.name} ${action}`)
    34.     return this
    35. }
    37. Machine.prototype.execute = async function(){
    38.     for(let i in this.actions){
    39.         if(typeof this.actions[i] === 'function'){
    40.             await this.actions[i]()
    41.         }else {
    42.             console.log(this.actions[i])
    43.         }
    45.     }
    46. }