JavaScript 警报消息和程序流程

Question

我的功能有问题。我希望烟花在高分破解时开始(在显示警报之前)。相反，目前的情况是先显示警报，然后在主菜单中启动烟花。在主菜单中我想再次完成它。只有当玩家读完高分被破解的警报后，烟花才应该被播放。如果玩家单击“确定”并到达主菜单，则应该再次完成。有谁知道我如何实现这个？随函附上我的 JavaScript 代码。

let klick = 0;

display = document.querySelector('#time');

$("#start").click(function() { //clickfunktion beim starten.
  $("#start").fadeToggle(); //Der Startbutton geht weg
  $("#welcome").fadeToggle(); // Das Willkommensschild geht weg
  $("#zeitauswahl").fadeToggle(); //Die Auswahl der Sekunden verschwindet

  $("#time").fadeToggle(900); //Timer kommt 
  $("#clicker").animate({
    height: 'toggle' //inverse aktion...keine height --> klappt auf // aufgeklappt  ---> macht height weg
  }); //clicker wird gestartet 
    var d = $("#zeitauswahl option:selected").val(); //referenziert auf zeitauswahl und option

  var dauer = parseInt(d); //verwandelt Dauer in einen Int

  startTimer(dauer); //übergibt die variable dauer, und die Funktion wird gestartet.  
})

function startTimer(dauer) {
    let timer = parseInt(dauer);
  runTimer();
  zeit = setInterval(runTimer, 1000); //zahl gibt an, wie oft die Function pro zeit wiederholt wird. Hier eine Sekunde (1000Millisekunden)
  function runTimer(){
    display.textContent = parseInt(timer); // zeigt sekunden-variable

    --timer; //setzt den timer immer einen herab

    if (timer < 0.00) {

      timer = 5;
      console.log(timer); //debug info
      $("#start").fadeToggle();
      $("#welcome").fadeToggle();
      $("#zeitauswahl").fadeToggle();
      $("#time").fadeToggle();
      $("#clicker").fadeToggle();
      $("#clicker").css("margin-top", "10%");
      $("#clicker").css("margin-left", "50%");

      alert("Sauber du hast " + klick + " klicks in 5 Sekunden geschafft!");
      alert('High Score ist ' + highScore(klick)); // zeigt den HighScore

      klick = 0
      console.log(timer);

      clearInterval(zeit);

    } //wenn timer auf 0 ist, wird alles wieder angezeigt und die Interval-Function beendet

}


};

$("#clicker").click(function() {
  let zufall = Math.floor(Math.random() * 400) -200 //setzt eine zufällige höhe für den clicker
  let zufal = Math.floor(Math.random() * 450) //Zufällige Variable für den Linkswert

  klick = klick + 1 //setzt den zähler beim klicken eins hoch
  if (klick % 2 == 0) {
    $("#clicker").animate({
      opacity: '0.3', //macht den klicker leicht durchsichtig
      left: zufall + "px",
      top: zufal + "px"
    }, "fast"); //bewegt den Klick-Block auf eine zufällige Stelle
  } else {
    $("#clicker").animate({
      opacity: '1.0',  //macht den Klicker sichtbar
      left: zufall + "px",
      top: zufal + "px"
    }, "fast")

  }



});

var fireworks = {

  ///////////////////////////// configuration ////////////////////////////

  // random colors
  _color: ['#D0D0D0', '#FF0000', '#FFFF00', '#22FF00', '#2040FF', '#00CCFF', '#FF00FF', '#A319D6'],
  // gravity factor
  _gravity: 0.07,
  // air resistance factor
  _resistance: 0.975,
  // zIndex of particles
  _zIndex: 20000,
  // maximal age of particles (in msec)
  _maxAge: 2000,
  // interval of appearing explosions (in msec)
  _interval: [500, 2500],
  // amount of particles per explosion
  _particlesPerExplosion: 40,
  // maximal speed of particle at moment of explosion
  _speed: 5,
  // minimal/maximal size of particle
  _minSize: 8,
  _maxSize: 12,



  ///////////////////////////// private vars /////////////////////////////

  _particles: [],
  _bodyWidth: 0,
  _bodyHeight: 0,
  _count: 0,
  _lastInterval: 0,



  ////////////////////////////// functions ///////////////////////////////

  // init fireworks
  init: function()
  {
    this._addEventListener(window, 'resize', function() { return fireworks.resize.apply(fireworks); });
    this._addEventListener(window, 'load', function() { return fireworks.start.apply(fireworks); });
  },


  // add an event listener
  _addEventListener: function(el, name, handler)
  {
    if (el.addEventListener)
      el.addEventListener(name, handler, false); 
    else if (el.attachEvent)
      el.attachEvent('on' + name, handler);
  },


  // start fireworks
  start: function()
  {
    // init window size
    this.resize();

    // start to move particles
    this._animFn = function() {fireworks._move();};
    this._lastInterval = this._time();
    requestAnimFrame(this._animFn);

    this._addExplosion();
  },


  // get current time
  _time: function()
  {
    return +new Date();
  },


  // return a random integer
  _random: function(value)
  {
    return Math.random() * value;
  },


  // return a random array element
  _randomArray: function(arr)
  {
    return arr[
      Math.floor(
        Math.random() * (arr.length)
      )
    ];
  },


  // add a new explosion
  _addExplosion: function()
  {
    var x = Math.floor(this._random(this._bodyWidth)),
      y = Math.floor((this._random(.5) + .1) * this._bodyHeight),
      dx = this._random(10) - 5,
      dy = this._random(-2) - 1,
      c1 = this._randomArray(this._color),
      c2 = this._randomArray(this._color);

    for (var i = 0; i < this._particlesPerExplosion; i++)
    {
      this._createParticle(
        x,
        y,
        dx,
        dy,
        i / (this._particlesPerExplosion - 1) * 180 * Math.PI,
        this._random(this._speed),
        this._random(1) > .5 ? c1 : c2
      );
    }

    window.setTimeout(
      function() { return fireworks._addExplosion.apply(fireworks);},
      this._random(this._interval[1] - this._interval[0]) + this._interval[0]
    );
  },


  // creates a new particle
  _createParticle: function(x, y, dx, dy, rot, speed, color)
  {
    var el = null,
      foundEl = false,
      p = this._particles;

    // look for old particle
    for (var i = 0, l = p.length; i < l; i++)
      if (p[i].data.age > 1)
      {
        el = p[i];
        foundEl = true;
        break;
      }

    // create span child for particles
    if (!foundEl)
    {
      el = document.createElement('div');
      el.className       = 'particle';
      el.style.position  = 'absolute';
      el.style.fontSize  = this._maxSize + 'px';
      el.style.zIndex    = this._zIndex;
      el.style.width     = this._maxSize + 'px';
      el.style.textAlign = 'center';
      el.style.overflow  = 'hidden';
      el.innerHTML       = '&#x25cf;';
    }

    el.style.left  = x + 'px';
    el.style.top   = y + 'px';
    el.style.color = color;
    el.data = {
      x: x,
      y: y,
      dx: Math.cos(rot) * speed + dx,
      dy: Math.sin(rot) * speed + dy,
      color: color,
      age: Math.random() * .25
    };

    if (!foundEl)
    {
      document.getElementsByTagName('body')[0].appendChild(el);
      this._particles.push(el);
    }
  },


  // move existing particles
  _move: function()
  {
    requestAnimFrame(this._animFn);

    // calculate movement factor
    var dif = this._time() - this._lastInterval;
    this._lastInterval = this._time();

    var delta = dif / 20,
      el,
      d,
      p = this._particles,
      r = Math.pow(this._resistance, delta),
      g = this._gravity * delta,
      a = dif / this._maxAge;

    for (var i = 0, l = p.length; i < l; i++)
    {
      el = p[i];
      d = el.data;

      if (d.age > 1)
        continue;

      d.age += a;
      d.dy += g;
      d.dx *= r;
      d.dy *= r;
      d.x += d.dx * delta;
      d.y += d.dy * delta;

      if (d.x < 0)
      {
        d.dx *= -1;
        d.x = 0;
      }
      else if (d.x > this._bodyWidth)
      {
        d.dx *= -1;
        d.x = this._bodyWidth;
      }
      if (d.y < 0)
      {
        d.dy *= -1;
        d.y = 0;
      }
      else if (d.y > this._bodyHeight)
      {
        d.dy *= -1;
        d.y = this._bodyHeight;
      }

      if (d.age > 1)
        d.x = d.y = 0;

      el.style.left = d.x + 'px';
      el.style.top = d.y + 'px';
      el.style.color = (Math.random() * .5 + d.age >= 1) ? 'transparent' : d.color;
      el.style.fontSize = Math.max(this._minSize, (1 - d.age) * this._maxSize) + 'px';
    }
  },


  // calculate new positions for all particles
  resize: function()
  {
    // get new width and height
    this._bodyWidth = this._getWindowWidth() - this._maxSize;
    this._bodyHeight = this._getWindowHeight() - this._maxSize - 10;
  },


  // get window width
  _getWindowWidth: function()
  {
    return document.getElementsByTagName('body')[0].offsetWidth;
  },


  // get window height
  _getWindowHeight: function()
  {
    var h = Math.max(self.innerHeight || 0, window.innerHeight || 0);

    if (document.documentElement)
      h = Math.max(h, document.documentElement.clientHeight || 0);
    if (document.body)
    {
      h = Math.max(h, document.body.clientHeight || 0);
      h = Math.max(h, document.body.scrollHeight || 0);
      h = Math.max(h, document.body.offsetHeight || 0);
    }

    return h;
  }

};

// shim layer with setTimeout fallback
window.requestAnimFrame = (function(){
  return  window.requestAnimationFrame       || 
      window.webkitRequestAnimationFrame || 
      window.mozRequestAnimationFrame    || 
      window.oRequestAnimationFrame      || 
      window.msRequestAnimationFrame     || 
      function (cb){
      window.setTimeout(cb, 1000 / 60);
      };
})();



function highScore(score) {
  var saved = 0;

  saved = parseFloat(localStorage.getItem('highScore')) || 0; //nimmt zeichenketten Argument (highscore) und gibt Float. highscore oder 0
  score = parseFloat(score) || 0; 
  document.getElementById("highscore").innerHTML = saved;

  if (score > saved) {
    saved = score; //speichert neuen Highscore, wenn der score größer ist als die gespeicherte variable
    localStorage.setItem('highScore', score);//speichert highscore im browser
    fireworks.start();
  }
  return saved;

}

Answer 1

由于您的代码非常复杂，我将只提供一般说明。 jQuery 最近开始兑现 promise 。 Promise 会让你按顺序安排执行。这是一个例子。

$.when($("span").fadeIn()).done(function() {
   $.when($("span").fadeOut()).done(function() {
        alert("done!")
   });
});

代码的外行翻译是:当淡入完成后，然后淡出，当淡出完成时，提醒“完成!”。

这样可以确保正确的执行顺序。对于这种逻辑来说，在计时器中休息并不是一个好主意。