<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>搜索框设计</title>
<link rel="stylesheet" href="./style.css">
</head>
<body>
<div class="search-overlay"></div>
<div class="scroll-cont">
<div class="content">
<div class="search">
<div class="search_bg"></div>
<div class="search_box">
<input type="text" class="search_input" placeholder="Search"/>
<div class="search_line"></div>
<div class="search_close"></div>
</div>
</div>
</div>
</div>
<script src="./script.js"></script>
</body>
</html>
(function() {
var $searchOverlay = document.querySelector(".search-overlay");
var $search = document.querySelector(".search");
var $clone, offsetX, offsetY;
$search.addEventListener("click", function() {
var $original = this;
$clone = this.cloneNode(true);
$searchOverlay.classList.add("s--active");
$clone.classList.add("s--cloned", "s--hidden");
$searchOverlay.appendChild($clone);
var triggerLayout = $searchOverlay.offsetTop;
var originalRect = $original.getBoundingClientRect();
var cloneRect = $clone.getBoundingClientRect();
offsetX = originalRect.left - cloneRect.left;
offsetY = originalRect.top - cloneRect.top;
$clone.style.transform = "translate("+ offsetX +"px, "+ offsetY +"px)";
$original.classList.add("s--hidden");
$clone.classList.remove("s--hidden");
var triggerLayout = $searchOverlay.offsetTop;
$clone.classList.add("s--moving");
$clone.setAttribute("style", "");
$clone.addEventListener("transitionend", openAfterMove);
});
function openAfterMove() {
$clone.classList.add("s--active");
$clone.querySelector("input").focus();
addCloseHandler($clone);
$clone.removeEventListener("transitionend", openAfterMove);
};
function addCloseHandler($parent) {
var $closeBtn = $parent.querySelector(".search_close");
$closeBtn.addEventListener("click", closeHandler);
};
function closeHandler(e) {
$clone.classList.remove("s--active");
e.stopPropagation();
var $cloneBg = $clone.querySelector(".search_bg");
$cloneBg.addEventListener("transitionend", moveAfterClose);
};
function moveAfterClose(e) {
e.stopPropagation();
$clone.classList.add("s--moving");
$clone.style.transform = "translate("+ offsetX +"px, "+ offsetY +"px)";
$clone.addEventListener("transitionend", terminateSearch);
};
function terminateSearch(e) {
$search.classList.remove("s--hidden");
$clone.remove();
$searchOverlay.classList.remove("s--active");
};
}());
*, *:before, *:after {
box-sizing: border-box;
margin: 0;
padding: 0;
}
html, body {
height: 100%;
background-image: url(https://source.unsplash.com/6ZZh8kOyW-4);
background-size: cover;
}
.search-overlay {
z-index: -1000;
overflow: hidden;
position: fixed;
left: 0;
top: 0;
width: 100%;
height: 100%;
}
.search-overlay.s--active {
z-index: 9999;
}
.scroll-cont {
position: relative;
height: 100%;
overflow-y: auto;
}
.content {
padding: 50px;
}
.search {
position: relative;
margin: 0 auto 50px;
width: 100px;
height: 100px;
perspective: 1000px;
}
.search:not(.s--active) {
cursor: pointer;
}
.search.s--hidden {
opacity: 0;
}
.search.s--cloned {
position: absolute;
left: 50%;
top: 50%;
right: auto;
bottom: auto;
margin-left: -58px;
margin-top: -58px;
margin-right: 0;
margin-bottom: 0;
}
.search.s--moving {
transition: transform 0.4s cubic-bezier(0.56, -0.49, 0.58, 0.9);
}
.search_bg {
position: absolute;
left: 50%;
top: 50%;
width: 100%;
height: 100%;
border-radius: 50%;
background: rgba(236, 83, 83, 0.8);
transition: all 0.6s ease;
transform: translate3d(-50%, -50%, 0);
will-change: transform;
}
.search.s--active .search_bg {
transform: translate3d(-50%, -50%, 0) scale(48);
}
.search_box {
position: absolute;
left: 50%;
top: 50%;
width: 40px;
height: 40px;
border: 4px solid #fff;
border-radius: 25px;
transform: translate(-50%, -50%);
transition: all 0.45s ease;
}
.search.s--active .search_box {
width: 510px;
height: 100px;
border-radius: 50px;
}
.search_input {
width: 100%;
height: 100%;
background: transparent;
border: none;
outline: none;
pointer-events: none;
opacity: 0;
color: #fff;
font-size: 40px;
transition: opacity 0s;
}
.search_input::-moz-placeholder {
color: rgba(255, 255, 255, 0.4);
}
.search_input:-ms-input-placeholder {
color: rgba(255, 255, 255, 0.4);
}
.search_input::placeholder {
color: rgba(255, 255, 255, 0.4);
}
.search.s--active .search_input {
padding: 23px 90px 23px 40px;
pointer-events: auto;
opacity: 1;
transition: opacity 0.18s 0.48s;
}
.search_line {
position: absolute;
left: 50%;
top: 50%;
width: 20px;
height: 4px;
border-radius: 2px;
background: #fff;
transform-origin: 0 50%;
transform: translate(12px, 12px) rotate(45deg);
transition: all 0.48s;
}
.search_line:before {
content: "";
position: absolute;
left: 0;
bottom: 0;
width: inherit;
height: inherit;
background: inherit;
border-radius: inherit;
transform: rotate(90deg);
opacity: 0;
transition: opacity 0.3s;
}
.search.s--active .search_line:before {
opacity: 1;
transition: opacity 0.3s 0.42s;
}
.search.s--active .search_line {
width: 36px;
height: 6px;
transform: translate(180px, 11px) rotate(-45deg);
}
.search_close {
position: absolute;
right: 0;
top: 0;
width: 30px;
height: 30px;
pointer-events: none;
}
.search.s--active .search_close {
right: 44px;
top: 33px;
pointer-events: auto;
cursor: pointer;
}
