调用函数时如何解决promise？ p5.j​​s

Question

var myPromise = new Promise(async function(resolve, reject){
        // idon't want to resolve after 10seconds... i want to resovle it after show_me function get called and finsih it's job.....
      setTimeout(resolve, 10000)
    });


    let xarr = [];
    let yarr = [];
    async function show_me(){
        console.log("called");

        let url = 'http://localhost:3000/get_transaction2';
        let response = await fetch(url);

        let commits = await response.json(); // read response body and parse as JSON
        for(let i= 0; i<commits.length; i++){
            let lastdate = commits[i].last_date;
            let cl = commits[i].collect_location.split(' ');
            let battery = commits[i].battery_left;
            let broked = commits[i].broken;

            collect_point = new jsPoint(cl[0],cl[1]);

            var font=new jsFont("arial","bold","10px");
            gr.drawText(`${cl}`,new jsPoint(cl[0],cl[1]),font,bluePen.color,90);
            // let x = cl[0] -700;
            // let y = -(Number(cl[1])) -400;
            let x = cl[0];
            let y = -(Number(cl[1]))
            console.log(x,y);

            xarr[i] = x;
            yarr[i] = y;


            if(battery<77 || Math.pow(x,2)+Math.pow(y,2)>=Math.pow(290,2)){

                plotPointsred(collect_point);
            }
            if(broked == 1){
                plotPointsgreen(collect_point);
            }

        }


        var greenPen=new jsPen(new jsColor("yellow"),5);
        gr.drawCircle(greenPen,new jsPoint(700,-400),290);

    }



    var cities = [];

    var recordDistance;
    var bestEver;
   async function setup() {
        await myPromise;
        s = createCanvas(1000, windowHeight);
        s.position(0,0);
        s.style('z-index','1');
        console.log("did it worked?");
        for (var i = 0; i < xarr.length; i++) {
            var v = createVector(xarr[i], yarr[i]);
            cities[i] = v;
        }

        var d = calcDistance(cities);
        recordDistance = d;
        bestEver = cities.slice();
      }

这是我要关注的p5.js事情

我希望setup（）等到-> show_me（）被调用并完成其工作，然后解决诺言（不必答应，如果我可以使setup（）成为对我有好处等到show_me被调用并完成），以便setup（）可以完成其工作。

如果您不熟悉p5.js，这是我的问题。我设置了一个函数以在10秒后解决诺言，因为在我打开index.html时会立即调用setup（）函数。 setTimeout（）函数是我知道如何延迟兑现承诺的唯一选择。

我的英语不太好，所以如果您觉得没有意思，请告诉我。 感谢您的阅读，我一直很欣赏stackoverflow谢谢您

Answer 1

完成show_me之后，您可以使用await和resolve调用show_me函数，就像注释中建议的@Chris一样。

var myPromise = new Promise(async function(resolve, reject){
  await show_me();
  resolve();
});

但是，老实说，您为什么要使用Promise来检查是否完成了另一个Promise？ 进行以下示例将得到相同的结果。

async function setup() {
  await show_me(); // Instead of await myPromise
  ...