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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<title>Document</title>
<style>
* {
margin: 0;
}
.wrap {
display: flex;
flex-direction: column;
overflow: hidden;
}
.header-box,
.footer-box {
height: 50px;
background-color: #f00;
}
.main-box {
height: calc(100vh - 100px);
background-color: #ccc;
overflow: auto;
}
.footer-box {
display: flex;
justify-content: center;
align-items: center;
}
</style>
</head>
<body>
<div class="wrap">
<div class="header-box"></div>
<div id="id-main" class="main-box">
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaa</p>
</div>
<div class="footer-box">
<input id="id-input" type="text" />
</div>
</div>
<script>
const Page = {
init() {
this.domMain = document.getElementById("id-main");
this.domInput = document.getElementById("id-input");
this.domInput.onfocus = this.refreshMainHeight.bind(this, 500);
this.domInput.onblur = this.refreshMainHeight.bind(this, 500);
},
refreshMainHeight(time) {
setTimeout(() => {
this.domMain.style.height = `${window.innerHeight - 100}px`;
window.scrollTo(0, 0);
}, time);
},
};
Page.init();
</script>
</body>
</html>
|