<head>
<title></title>
<style type="text/css">
div
{
display:block;
}
</style>
onload = function () {
//隐藏
document.getElementById(\'btnHidde\').onclick = function () {
document.getElementById(\'dv\').style.display = \'none\';
};
//显示
document.getElementById(\'btnShow\').onclick = function () {
document.getElementById(\'dv\').style.display = \'block\';
};
//切换
document.getElementById(\'btn\').onclick = function () {
var dvObj = document.getElementById(\'dv\');
alert(dvObj.style.display);
if (dvObj.style.display == \'none\') {
dvObj.style.display = \'block\';
} else {
dvObj.style.display = \'none\';
}
};
};
</script>
</head>
<body>
<input type="button" value="显示" />
<input type="button" value="隐藏" />
<input type="button" value="显示/隐藏" />
<div>
</div>
</body>