JS控制DIV样式
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>JS控制DIV样式</title>
<style>
</style>
</head>
<body>
<div id="box"></div>
<input type="button" value="变高" onclick="changeh(this)">
<input type="button" value="变宽" onclick="changew(this)">
<input type="button" value="变色" onclick="changec(this)">
<input type="button" value="重置" onclick="reset(this)">
<input type="button" value="隐藏" onclick="hide(this)">
<input type="button" value="显示" onclick="show(this)">
<script>
var box;
window.onload = function() {
box = document.getElementById("box");
}
function changeh() {
box.style.height = "300px";
}
function changew() {
box.style.width = "300px";
}
function changec() {
box.style.background = "#000";
}
function reset() {
box.style = "reset";
}
function hide() {
box.style.display = "none";
}
function show() {
box.style.display = "block";
}
</script>
</body>
</html>多多练习，重置样式也可以使用reset。