粒子按钮动画

下载代码

html

css

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html

css

@import url("https://fonts.googleapis.com/css?family=Montserrat&display=swap");
html,
body {
  height: 100%;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: "Montserrat";
  background-color: #161616;
}
ul,
li {
  list-style-type: none;
}
ul {
  padding-left: 0;
  font-size: 0.875em;
}
li {
  margin: 15px auto;
  padding: 15px 0px;
  border-bottom: 1px solid rgba(175, 175, 175, 0.25);
}
li:last-child {
  border: none;
}
a {
  display: inline-block;
  text-decoration: none;
  color: white;
  display: flex;
  align-items: center;
}
h3 {
  font-size: 20px;
}
.container {
  text-align: center;
}
.menu-btn {
  border: none;
  background: linear-gradient(120deg, #f829ab 25%, #f42977 75%, #f41f5f 100%);
  border-radius: 25px;
  -webkit-transform: rotate(-45deg) translateZ(0);
          transform: rotate(-45deg) translateZ(0);
  width: 70px;
  height: 70px;
  position: relative;
  cursor: pointer;
  box-shadow: 0px 2px 20px rgba(244, 31, 95, 0.25);
  margin: 15px auto;
}
.menu-btn:focus {
  outline: none;
}
.menu-btn:before,
.menu-btn:after {
  content: "";
  position: absolute;
  top: calc(50% - 1px);
  left: calc(50% - 17px);
  width: 34px;
  height: 2px;
  background: white;
  transition: 0.3s ease all;
  -webkit-transform: rotate(-45deg) translateZ(0);
          transform: rotate(-45deg) translateZ(0);
}
.menu-btn:after {
  -webkit-transform: rotate(45deg) translateZ(0);
          transform: rotate(45deg) translateZ(0);
}
.menu-btn.open:before {
  -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
}
.menu-btn.open:after {
  -webkit-transform: rotate(90deg);
          transform: rotate(90deg);
}
.menu {
  position: relative;
  min-height: 250px;
  min-width: 300px;
  margin: 15px auto;
  border-radius: 24px 24px 24px 4px;
  text-align: left;
  padding: 15px 20px;
  -webkit-transform: scale(0);
          transform: scale(0);
  -webkit-transform-origin: 50% 50%;
          transform-origin: 50% 50%;
  transition: 0.35s ease all;
  overflow: hidden;
}
.menu > h3 {
  opacity: 0;
}
.menu > ul > li {
  opacity: 0;
}
.menu:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: #28334b;
  z-index: -1;
  border-radius: 50%;
  -webkit-transform: scale(0.5);
          transform: scale(0.5);
}
.menu.active:before {
  -webkit-animation: 0.2s menuIn 0.15s normal forwards;
          animation: 0.2s menuIn 0.15s normal forwards;
  -webkit-animation-timing-function: ease-in;
          animation-timing-function: ease-in;
}
.active {
  -webkit-transform: scale(1);
          transform: scale(1);
}
.menu.active > h3 {
  transition: 0.2s ease-in 0.2s;
  opacity: 1;
}
.menu.active > ul > li {
  transition: 0.2s ease-in 0.2s;
  opacity: 1;
}
@-webkit-keyframes menuIn {
  0% {
    -webkit-transform: scale(0.5);
            transform: scale(0.5);
    border-radius: 50%;
  }
  45% {
    -webkit-transform: scale(1.25);
            transform: scale(1.25);
    border-radius: 50%;
  }
  100% {
    -webkit-transform: scale(1);
            transform: scale(1);
    border-radius: 24px 24px 24px 4px;
  }
}
@keyframes menuIn {
  0% {
    -webkit-transform: scale(0.5);
            transform: scale(0.5);
    border-radius: 50%;
  }
  45% {
    -webkit-transform: scale(1.25);
            transform: scale(1.25);
    border-radius: 50%;
  }
  100% {
    -webkit-transform: scale(1);
            transform: scale(1);
    border-radius: 24px 24px 24px 4px;
  }
}
@-webkit-keyframes menuOut {
  from {
    -webkit-transform: scale(1);
            transform: scale(1);
    border-radius: 24px 24px 24px 4px;
  }
  to {
    -webkit-transform: scale(0.5);
            transform: scale(0.5);
    border-radius: 50%;
  }
}
@keyframes menuOut {
  from {
    -webkit-transform: scale(1);
            transform: scale(1);
    border-radius: 24px 24px 24px 4px;
  }
  to {
    -webkit-transform: scale(0.5);
            transform: scale(0.5);
    border-radius: 50%;
  }
}
svg {
  width: 26px;
  height: 26px;
  fill: white;
  margin-right: 10px;
}
.menu-btn-container {
  position: relative;
}
.menu-btn-pulse {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%) scale(0);
          transform: translate(-50%, -50%) scale(0);
  z-index: -1;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 1px solid rgba(248, 41, 171, 0.28);
  -webkit-filter: blur(3px);
          filter: blur(3px);
}
.menu-btn-particle {
  width: 6px;
  height: 6px;
  position: absolute;
  display: inline-block;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  z-index: -1;
}

JavaScript

const randomMinMax = (min,max) => {
    return min + Math.random() * (max-min);
}
const button = document.querySelector('.menu-btn');
const menu = document.querySelector('.menu');
const buttonPulse = document.querySelectorAll('.menu-btn-pulse')

const btnHoverTl = new TimelineMax({
    repeat:-1,
    paused:true
}); 
btnHoverTl.fromTo(button,0.8,{
        scale:1
    },{
        scale:1.05
    })
    .to(button,0.6,{
        scale:1
    });

const pulseTl = new TimelineMax({
    repeat:-1,
    onRepeat:() => {
        TweenMax.set(buttonPulse,{scale:0.5})
    }
});

pulseTl.staggerTo(buttonPulse,2,{
        scale:2.5,
        transformOrigin:"center center"
    },0.25,'in')
.staggerTo(buttonPulse,2,{
        opacity:0,
        scale:3.5
    },0.25,'in+=0.25');

button.addEventListener('click',() => {
    menu.classList.toggle('active');
    button.classList.toggle('open');
    // play particles on click
    button.classList.contains('open') ? playParticles()  : null;

if (button.classList.contains('open')) {
        pulseTl.eventCallback("onRepeat", () => {
            pulseTl.pause();
        })
        btnHoverTl.eventCallback('onRepeat',() => {
            btnHoverTl.pause();
        })
    }
    else {
        pulseTl.eventCallback("onRepeat", null);
        pulseTl.restart();
        btnHoverTl.eventCallback('onRepeat',null)
        btnHoverTl.restart();
    }  
});

button.addEventListener('mouseover',() => { 
    btnHoverTl.play();   
    btnHoverTl.eventCallback("onRepeat", null);
});

button.addEventListener('mouseleave',()=> {
    btnHoverTl.eventCallback("onRepeat", () => {
        btnHoverTl.pause();
    });
});

const colors = ["#F829AB","#F42977","#F41F5F"];
const particleCount = 8;
const btnContainer = document.querySelector('.menu-btn-container');

// create a few span elements
const createParticles = () => {    
    for (let i = 0; i < particleCount; i++) {   
        // create element
        const particle = document.createElement('span');
        // assign class to element
        particle.setAttribute('class','menu-btn-particle')
        btnContainer.appendChild(particle);
    }
};

createParticles();

const particle = document.querySelectorAll('.menu-btn-particle');

randomizeParticles = () => {
    let color = colors[(Math.random() * colors.length) | 0];
    TweenMax.set(particle,{x:0,y:0,backgroundColor:() => color });
    TweenMax.set(particle,{scale:() => randomMinMax(0.35,1)});
    TweenMax.set(particle,{opacity:() => randomMinMax(0.25,1)});
}

randomizeParticles();

playParticles = () => {
  const particleTl = new TimelineMax();
  particleTl.staggerTo(particle,0.5,{ cycle: {
    physics2D: () => {
      return {
        velocity:randomMinMax(145,165),
        angle:randomMinMax(180,325),
        gravity:randomMinMax(215,225)        
      }   
    }
  }},'in')
    .to(particle,0.4,{scale:0,opacity:0,onComplete:() => {
      randomizeParticles();
    }},'in')
};

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