js能实现PowerPoint的动画效果 文字一行一行显示出来

Question

RT

Answer 1

最好是PowerPoint的依次渐变的动画效果

Answer 2

<script src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
window.onload=function() {
$("#div1 span").hide();
$("button").click(function(){
$("#div1 span:eq(0)").slideDown(1000, function () {
$(this).next().slideDown(1000, arguments.callee); 
});
});};</script> <button>show</button>
<div id=div1 style="width:100px;">
<span>aaaaaaaaaaaaaaa</span>
<span>bbbbbbbbbbbbbbb</span>
<span>ccccccccccccccc</span>
<span>ddddddddddddddd</span>
</div>