我想在聊天可用时显示在我们的网站上。问题是它不会在周末开放。我如何排除它们？可以吗？
<html>
<body>
<script type="text/javascript">
function chatonoff(){
var now = new Date();
var hour = now.getHours();
if (hour >=9 && hour <=18)
{
document.getElementById("chat").src = "/bilder/butik/chat-open.png";
}
}
</script>
<img id="chat" src="/bilder/butik/chat.png" onload="chatonoff()">
</body>
</html>
最佳答案
你可以这样做
function chatonoff(){
var now = new Date();
var hour = now.getHours();
var day = now.getDay();
//Check if weekend : in this case, I assume that saturday == 6 and Sunday = 0
//It depends on your location / timezone
if(day != 6 && day != 0)
{
if (hour >=9 && hour <=18)
{
document.getElementById("chat").src = "/bilder/butik/chat-open.png";
}
}
}
编辑
关于排除假期:
您应该创建一个包含所有关闭日期的数组。然后，检查数组中是否存在当前日期
var offDaysListArray = ['2013-01-01','2013-01-02'];
var now = new Date();
var y = now .getFullYear();
var d = (now .getDate() < 10) ? '0'+now .getDate() : now .getDate();
var m = ((now .getMonth()+1) < 10) ? '0'+(now .getMonth()+1) : (now .getMonth()+1);
//Check if it is a closed day
if(offDaysListArray.indexOf(y + '-' + m + '-' + d) != -1)
return false; //It is a close day
请注意indexOf，IE8 等旧浏览器没有实现此功能。检查Why doesn't indexOf work on an array IE8?
关于javascript - 我如何在周末使用 javascript 更改图片？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14273514/