點超連結頁面動畫特效

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<div class="header-menu">1</div>
<div class="header-menu">2</div>
<div class="header-menu">3</div>
<div class="header-menu">4</div>
<div class="header-menu">5</div>
<div class="header-menu">6</div>
<div class="header-menu">7</div>
<div class="header-menu">8</div>
<div class="header-menu">9</div>
<div class="header-menu">10</div>
<input type="button" id="btn" value="toggle" />

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@keyframes menu-in-s {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        transform: translateY(40px);
        -webkit-animation-timing-function: ease-out;
        animation-timing-function: ease-out
    }
    80% {
        opacity: 1;
        -webkit-transform: translateY(-4px);
        transform: translateY(-4px)
    }
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0)
    }
}

@keyframes menu-out-s {
    0% {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
        -webkit-animation-timing-function: cubic-bezier(.23, 1, .32, 1);
        animation-timing-function: cubic-bezier(.23, 1, .32, 1)
    }
    100% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        transform: translateY(40px);
    }
}
.header-menu:nth-of-type(1) {
    -webkit-animation: menu-in-s .4s linear 0s 1 normal both;
    animation: menu-in-s .4s linear 0s 1 normal both
}
.header-menu:nth-of-type(2) {
    -webkit-animation: menu-in-s .4s linear .05s 1 normal both;
    animation: menu-in-s .4s linear .05s 1 normal both
}
.header-menu:nth-of-type(3) {
    -webkit-animation: menu-in-s .4s linear .1s 1 normal both;
    animation: menu-in-s .4s linear .1s 1 normal both
}
.header-menu:nth-of-type(4) {
    -webkit-animation: menu-in-s .4s linear .15s 1 normal both;
    animation: menu-in-s .4s linear .15s 1 normal both
}
.header-menu:nth-of-type(5) {
    -webkit-animation: menu-in-s .4s linear .2s 1 normal both;
    animation: menu-in-s .4s linear .2s 1 normal both
}
.header-menu:nth-of-type(6) {
    -webkit-animation: menu-in-s .4s linear .25s 1 normal both;
    animation: menu-in-s .4s linear .25s 1 normal both
}
.header-menu:nth-of-type(7) {
    -webkit-animation: menu-in-s .4s linear .3s 1 normal both;
    animation: menu-in-s .4s linear .3s 1 normal both
}
.header-menu:nth-of-type(8) {
    -webkit-animation: menu-in-s .4s linear .35s 1 normal both;
    animation: menu-in-s .4s linear .35s 1 normal both
}
.header-menu:nth-of-type(9) {
    -webkit-animation: menu-in-s .4s linear .4s 1 normal both;
    animation: menu-in-s .4s linear .4s 1 normal both
}
.header-menu:nth-of-type(10) {
    -webkit-animation: menu-in-s .4s linear .45s 1 normal both;
    animation: menu-in-s .4s linear .45s 1 normal both
}



.header-menu-fadeout:nth-of-type(1) {
    -webkit-animation: menu-out-s .4s linear .36s 1 normal both;
    animation: menu-out-s .4s linear .36s 1 normal both
}
.header-menu-fadeout:nth-of-type(2) {
    -webkit-animation: menu-out-s .4s linear .32s 1 normal both;
    animation: menu-out-s .4s linear .32s 1 normal both
}
.header-menu-fadeout:nth-of-type(3) {
    -webkit-animation: menu-out-s .4s linear .28s 1 normal both;
    animation: menu-out-s .4s linear .28s 1 normal both
}
.header-menu-fadeout:nth-of-type(4) {
    -webkit-animation: menu-out-s .4s linear .24s 1 normal both;
    animation: menu-out-s .4s linear .24s 1 normal both
}
.header-menu-fadeout:nth-of-type(5) {
    -webkit-animation: menu-out-s .4s linear .2s 1 normal both;
    animation: menu-out-s .4s linear .2s 1 normal both
}
.header-menu-fadeout:nth-of-type(6) {
    -webkit-animation: menu-out-s .4s linear .16s 1 normal both;
    animation: menu-out-s .4s linear .16s 1 normal both
}
.header-menu-fadeout:nth-of-type(7) {
    -webkit-animation: menu-out-s .4s linear .12s 1 normal both;
    animation: menu-out-s .4s linear .12s 1 normal both
}
.header-menu-fadeout:nth-of-type(8) {
    -webkit-animation: menu-out-s .4s linear .08s 1 normal both;
    animation: menu-out-s .4s linear .08s 1 normal both
}
.header-menu-fadeout:nth-of-type(9) {
    -webkit-animation: menu-out-s .4s linear .04s 1 normal both;
    animation: menu-out-s .4s linear .04s 1 normal both
}
.header-menu-fadeout:nth-of-type(10) {
    -webkit-animation: menu-out-s .4s linear 0s 1 normal both;
    animation: menu-out-s .4s linear 0s 1 normal both
}


.header-menu-fadeout{
  pointer-events: none;
}

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document.getElementById('btn').addEventListener("click",function(){
 document.querySelectorAll('.header-menu').forEach((el)=>{
   var className = "header-menu-fadeout";
  if (el.classList) {
  el.classList.toggle(className);
} else {
  var classes = el.className.split(' ');
  var existingIndex = classes.indexOf(className);

  if (existingIndex >= 0)
    classes.splice(existingIndex, 1);
  else
    classes.push(className);

  el.className = classes.join(' ');
}
 });
});