🍎 web鼠标点击烟花特效

收藏一个网页鼠标点击特效插件，喜欢的可以自取。

# 烟花特效

function clickEffect() {
  let balls = [];
  let longPressed = false;
  let longPress;
  let multiplier = 0;
  let width, height;
  let origin;
  let normal;
  let ctx;
  const colours = ["#F73859", "#14FFEC", "#00E0FF", "#FF99FE", "#FAF15D"];
  const canvas = document.createElement("canvas");
  document.body.appendChild(canvas);
  canvas.setAttribute("style", "width: 100%; height: 100%; top: 0; left: 0; z-index: 99999; position: fixed; pointer-events: none;");
  const pointer = document.createElement("span");
  pointer.classList.add("pointer");
  document.body.appendChild(pointer);
 
  if (canvas.getContext && window.addEventListener) {
    ctx = canvas.getContext("2d");
    updateSize();
    window.addEventListener('resize', updateSize, false);
    loop();
    window.addEventListener("mousedown", function(e) {
      pushBalls(randBetween(10, 20), e.clientX, e.clientY);
      document.body.classList.add("is-pressed");
      longPress = setTimeout(function(){
        document.body.classList.add("is-longpress");
        longPressed = true;
      }, 500);
    }, false);
    window.addEventListener("mouseup", function(e) {
      clearInterval(longPress);
      if (longPressed == true) {
        document.body.classList.remove("is-longpress");
        pushBalls(randBetween(50 + Math.ceil(multiplier), 100 + Math.ceil(multiplier)), e.clientX, e.clientY);
        longPressed = false;
      }
      document.body.classList.remove("is-pressed");
    }, false);
    window.addEventListener("mousemove", function(e) {
      let x = e.clientX;
      let y = e.clientY;
      pointer.style.top = y + "px";
      pointer.style.left = x + "px";
    }, false);
  } else {
    console.log("canvas or addEventListener is unsupported!");
  }
 
 
  function updateSize() {
    canvas.width = window.innerWidth * 2;
    canvas.height = window.innerHeight * 2;
    canvas.style.width = window.innerWidth + 'px';
    canvas.style.height = window.innerHeight + 'px';
    ctx.scale(2, 2);
    width = (canvas.width = window.innerWidth);
    height = (canvas.height = window.innerHeight);
    origin = {
      x: width / 2,
      y: height / 2
    };
    normal = {
      x: width / 2,
      y: height / 2
    };
  }
  class Ball {
    constructor(x = origin.x, y = origin.y) {
      this.x = x;
      this.y = y;
      this.angle = Math.PI * 2 * Math.random();
      if (longPressed == true) {
        this.multiplier = randBetween(14 + multiplier, 15 + multiplier);
      } else {
        this.multiplier = randBetween(6, 12);
      }
      this.vx = (this.multiplier + Math.random() * 0.5) * Math.cos(this.angle);
      this.vy = (this.multiplier + Math.random() * 0.5) * Math.sin(this.angle);
      this.r = randBetween(8, 12) + 3 * Math.random();
      this.color = colours[Math.floor(Math.random() * colours.length)];
    }
    update() {
      this.x += this.vx - normal.x;
      this.y += this.vy - normal.y;
      normal.x = -2 / window.innerWidth * Math.sin(this.angle);
      normal.y = -2 / window.innerHeight * Math.cos(this.angle);
      this.r -= 0.3;
      this.vx *= 0.9;
      this.vy *= 0.9;
    }
  }
 
  function pushBalls(count = 1, x = origin.x, y = origin.y) {
    for (let i = 0; i < count; i++) {
      balls.push(new Ball(x, y));
    }
  }
 
  function randBetween(min, max) {
    return Math.floor(Math.random() * max) + min;
  }
 
  function loop() {
    ctx.fillStyle = "rgba(255, 255, 255, 0)";
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    for (let i = 0; i < balls.length; i++) {
      let b = balls[i];
      if (b.r < 0) continue;
      ctx.fillStyle = b.color;
      ctx.beginPath();
      ctx.arc(b.x, b.y, b.r, 0, Math.PI * 2, false);
      ctx.fill();
      b.update();
    }
    if (longPressed == true) {
      multiplier += 0.2;
    } else if (!longPressed && multiplier >= 0) {
      multiplier -= 0.4;
    }
    removeBall();
    requestAnimationFrame(loop);
  }
 
  function removeBall() {
    for (let i = 0; i < balls.length; i++) {
      let b = balls[i];
      if (b.x + b.r < 0 || b.x - b.r > width || b.y + b.r < 0 || b.y - b.r > height || b.r < 0) {
        balls.splice(i, 1);
      }
    }
  }
}

# 表情特效

function mouseClickAN() {
  let $html = document.getElementsByTagName("html")[0];
  let $body = document.getElementsByTagName("body")[0];
  let emojIcon = ['😀','😃','😄','😁','😆','😅','😂','🤣','🥲','😊','😇','🙂','😉','😌','😍','🥰','😘','😗','😙','😚','😋','😛','😝','😜','🤪','🤨','🧐','🤓','😎','🤩','🥳','😏','😒','😫','😖','🥺','😤','😭','😢','😡','😠','🥵','🤯','😳','🥶','😶‍🌫️','😱','😨','😰','😥','😓','🤗','🤔','🤭','🤫','🤥','😑','😬','🙄','😯','😦','😧','😮','😲','🥱','😴','🤤','😪','😮‍💨','😵','😵‍💫','🤐','🥴','🤢','🤮','🤧','😷','🤕','🤑','🤠','😈','👿','🤡','👻','💀','☠️','👽','🤖','🎃','😺','😸','😹','😻','😼','😽','🙀','😿','😾','👀','🧚‍♀️','🧚‍♀️','🐶','🐱','🐭','🐹','🦊','🐻','🐼','🐻','🐯','🦁','🐮','🐷','🐽','🐸','🐵','🙈','🙉','🙊','🐒','🐔','🐧','🐦','🐤','🐣','🐥','🦅','🦉','🐺','🦄','🐝','🦋','🌈','💫','🌟','✨','⭐️','💥','🔥','🌪'];
  $html.onclick = function(e) {
    let $elem = document.createElement("b");
      $elem.style.color = "#E94F06";
      $elem.style.zIndex = 9999;
      $elem.style.position = "absolute";
      $elem.style.select = "none";
      let x = e.pageX;
      let y = e.pageY;
      $elem.style.left = (x - 10) + "px";
      $elem.style.top = (y - 20) + "px";
      clearInterval(anim);
      $elem.innerText = emojIcon[Math.floor(Math.random()*emojIcon.length)];
      $elem.style.fontSize = Math.random() * 10 + 14 + "px";
      var increase = 0;
      var anim;
      setTimeout(function() {
          anim = setInterval(function() {
              if (++increase == 150) {
                  clearInterval(anim);
                  $body.removeChild($elem);
              }
              $elem.style.top = y - 20 - increase + "px";
              $elem.style.opacity = (150 - increase) / 120;
          }, 8);
      }, 70);
      $body.appendChild($elem);
  };
}

Example

# 使用

引入js

在页面加载时，运行上面对应的js方法即可。