<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
input {
width: 200px;
height: 20px;
background: white;
}
input.active {
background: yellow;
}
#div1 div {
width: 200px;
height: 200px;
background-color: #cccccc;
display: none;
}
</style>
</head>
<body>
<div id="div1">
<input type="button" value="a">
<input type="button" value="b">
<input type="button" value="c">
<div class="dv">a</div>
<div class="dv">b</div>
<div class="dv">c</div>
</div>
</body>
<script>
window.onload = function () {
new TabSwitch('div1')
}
function TabSwitch(id) {
var _this = this;
var oDiv1 = document.getElementById(id);
this.bTn = document.getElementsByTagName('input');
this.aDiv = document.getElementsByClassName('dv');
document.getElementsByTagName('input')[0].className = 'active';
document.getElementsByClassName('dv')[0].style.display = 'block';
for (var i = 0; i < this.bTn.length; i++) {
this.bTn[i].index = i;
this.bTn[i].onclick = function () {
_this.fnClick(this);
}
}
};
TabSwitch.prototype.fnClick = function (oBtn) {
for (var i = 0; i < this.bTn.length; i++) {
this.bTn[i].className = '';
this.aDiv[i].style.display = 'none';
}
oBtn.className = 'active';
this.aDiv[oBtn.index].style.display = 'block';
}
</script>
</html>
