JQ 滑动锚链接
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<script>
$(window).scroll(function(){
var targetTop = $(this).scrollTop();
if(targetTop>900){
$('#mrt').css('display','block');
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$('#mrt').css('display','none');
}
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$(function(){
$("ul li a").click(function(){
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<style>
ul{
position:fixed;
top:0;
background:#999999;
}
ul li{
float:left;
margin:10px;
padding:10px;}
</style>
<ul>
<li><a href="#us">111111</a></li>
<li><a href="#about">22222</a></li>
<li><a href="#prouct">33333</a></li>
<li><a href='http://www.baidu.com'>44444</a></li>
<li>55555</li>
<li>66666</li>
</ul>
<div id='mrt' style='width:200px; display:none; height:200px; COLOR:WHITE; position:fixed; top:50px;'>asdasdasdASSSSSS</div>
<div style="clear:both;"></div>
<div id="us" style="height:820px; background:#6699CC; width:100%;"></div>
<div id="about" style="height:820px; background:#0066CC; width:100%;"></div>
<div id="prouct" style="height:820px; background:#003366; width:100%;"></div>
</body>
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