js控制div样式
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<style>
#box{
border: 1px solid black;
width: 100px;
height: 100px;
margin: 5px
}
</style>
<body>
<div id="box"></div>
<button onclick="aa()">变宽</button>
<button onclick="bb()">变长</button>
<button onclick="cc()">变色</button>
<button onclick="dd()">重置</button>
<button onclick="ee()">隐藏</button>
<button onclick="ff()">显示</button>
<script>
var box;
window.onload = function () {
box = document.getElementById('box');
};
function aa() {
box.style.width='400px'
}
function bb() {
box.style.height='400px'
}
function cc() {
box.style.background='blue'
}
function dd() {
box.style.width='100px';
box.style.height='100px';
box.style.background='none';
}
function ee() {
box.style.display='none'
}
function ff() {
box.style.display='block'
}
</script>
</body>
</html>