[英]Automatically scroll down page
I am trying to get a specific div on my page to automatically start scrolling down, then back up once the page loads. 我正在尝试在页面上获取特定的div,以自动开始向下滚动,然后在页面加载后进行备份。
I have this written for my javascript: 我为我的JavaScript编写了此代码:
<script> function scroll(speed) {
$('#scrollingcontent').animate({ scrollTop: $(document).height() - $(window).height() }, speed, function() {
$(this).animate({ scrollTop: 0 }, speed);
});
}
speed = 1000;
scroll(speed)
setInterval(function(){scroll(speed)}, speed * 2);</script>
Chrome is telling me that I have a reference error, and that $ is not defined. Chrome告诉我我有参考错误,并且未定义$。 My div that i want animated has the id of scrollingcontent.
我想要动画化的div具有scrollingcontent的ID。
Thanks for any help! 谢谢你的帮助!
Check whether you have attached jQuery properly or not. 检查您是否正确连接了jQuery。
<head>
<script src="jquery-1.11.1.min.js"></script>
</head>
More : - http://www.w3schools.com/jquery/jquery_install.asp 更多:-http: //www.w3schools.com/jquery/jquery_install.asp
Hope this helps. 希望这可以帮助。 Cheers!
干杯!
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