abstrak：代碼<!DOCTYPE html><html><head><meta charset="UTF-8"><title>變化DIV</title><style>#box {height: 100px;width: 100px;background: red;margin: 20px 60px;}&l
代碼
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>變化DIV</title>
<style>
#box {height: 100px;width: 100px;background: red;margin: 20px 60px;}
</style>
</head>
<body>
<script type="text/javascript">
var box
window.onload=function () {
box=document.getElementById('box')
}
function aa() {
box.style.height="300px"
}
function bb() {
box.style.width="300px"
}
function cc() {
box.style.background="pink"
}
function dd() {
box.style.height="100px"
box.style.width="100px"
box.style.background="red"
}
function ee() {
box.style.display="none"
}
function ff() {
box.style.display="block"
}
</script>
<div id="box"></div>
<input type="button" value="變高" onclick="aa()">
<input type="button" value="變寬" onclick="bb()">
<input type="button" value="顏色" onclick="cc()">
<input type="button" value="重置" onclick="dd()">
<input type="button" value="隱藏" onclick="ee()">
<input type="button" value="顯示" onclick="ff()">
</body>
</html>
Guru membetulkan：天蓬老師Masa pembetulan：2018-12-29 10:48:24
Rumusan guru：頁面呈現(xiàn)分為二步: html解析與javascript代碼執(zhí)行, 注意一下這二者之間的切換