js事件案例
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>changeDIV</title>
<style type="text/css">
#box{
width: 100px;height: 100px;
background: red;margin: 20px 80px;
}
</style>
</head>
<body>
<!-- 用按钮控制DIV高度,宽度，颜色，重置，隐藏，显示 -->
<div id="box"></div>
<input type="button" value="变高" onclick="aa()">
<input type="button" value="变宽" onclick="bb()">
<input type="button" value="变色" onclick="cc()">
<input type="button" value="重置" onclick="dd()">
<input type="button" value="隐藏" onclick="ee()">
<input type="button" value="显示" onclick="ff()">
<script type="text/javascript">
var box;
window.onload = function (){
box = document.getElementById('box');
}
function aa(){// 改变高度
box.style.height = '400px';
}
function bb(){// 改变宽度
box.style.width = '400px';
}
function cc(){// 改变颜色
box.style.background = 'pink';
}
function dd(){// 重置
box.style.height = '100px';
box.style.width = '100px';
box.style.background = 'red';
}
function ee(){// 隐藏
box.style.display = 'none';
}
function ff(){// 显示
box.style.display = 'block';
}
</script>
</body>
</html>
