回到顶部

    xiaoxiao2021-12-13  9

    <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="description" content=""> <meta name="author" content=""> <title>Home</title> <script src="http://og9n58fei.bkt.clouddn.com/jquery-2.2.4.min.js"></script> </head> <body> <div style="height:2000px;"></div> <a href="#" class="toTop" style="display:inline-block;width:50px;height:50px;background:red;position:fixed;right:3%;bottom:10%;">Top</a> </body> </html> <script type="text/javascript"> /* 回到顶部 */ $(window).scroll(function(){ var sc=$(window).scrollTop(); var rwidth=$(window).width() if(sc>0){ $(".toTop").css("display","block"); $(".toTop").css("left",(rwidth-36)+"px") }else{ $(".toTop").css("display","none"); } }) $(".toTop").click(function(){ var sc=$(window).scrollTop(); $('body,html').animate({scrollTop:0},500); }) </script>
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