尝试在我的网站标题上显示一条消息，该消息应根据日期每天更改。使用下面的脚本，但似乎它没有调用 var。因为它什么也没显示，我不知道哪一个错过了这一点。
<script type="function/javascritp">
function unhide(id) {
var element = document.getElementById(id);
element.className = element.className.replace('hidden', '');
}
switch((new Date()).getDay()) {
case 0:
// Sunday
unhide('sun');
break;
case 1:
// Monday
unhide('mon');
break;
case 2:
// Tuesday
unhide('tues');
break;
case 3:
// Wednesday
unhide('wed');
break;
case 4:
// Thursday
unhide('thurs');
break;
case 5:
// Friday
unhide('fri');
break;
case 6:
// Saturday
unhide('sat');
break;
};
</script>
</head>
<body>
<Header>
<div id="sun" class="hidden">Today is Sunday</div>
<div id="mon" class="hidden">Today is Monday</div>
<div id="tues" class="hidden">Today is Tuesday</div>
<div id="wed" class="hidden">Today is Wednesday</div>
<div id="thurs" class="hidden">Today is Thursday</div>
<div id="fri" class="hidden">Today is Friday</div>
<div id="sat" class="hidden">Today is Saturday</div>
</header>
</body>
我正在使用CSS代码，
.hidden {
display: none;
}
最佳答案
它必须是 .hidden 而不是 CSS 中的 hidden；你忘了添加句点 . ，其余的看起来都不错
function unhide(id) {
var element = document.getElementById(id);
element.className = element.className.replace('hidden', '');
}
switch((new Date()).getDay()) {
case 0:
// Sunday
unhide('sun');
break;
case 1:
// Monday
unhide('mon');
break;
case 2:
// Tuesday
unhide('tues');
break;
case 3:
// Wednesday
unhide('wed');
break;
case 4:
// Thursday
unhide('thurs');
break;
case 5:
// Friday
unhide('fri');
break;
case 6:
// Saturday
unhide('sat');
break;
};.hidden{display:none}<Header>
<div id="sun" class="hidden">Today is Sunday</div>
<div id="mon" class="hidden">Today is Monday</div>
<div id="tues" class="hidden">Today is Tuesday</div>
<div id="wed" class="hidden">Today is Wednesday</div>
<div id="thurs" class="hidden">Today is Thursday</div>
<div id="fri" class="hidden">Today is Friday</div>
<div id="sat" class="hidden">Today is Saturday</div>
</Header>关于Javascript函数取消隐藏元素似乎没有调用var，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31501096/