滚动到顶部固定

Posted 2020-11-21 yangguoe

 1     // 滚动到顶部固定
 2     var navH = $(".fixedTop").offset().top;
 3     $(".fixedTop").wrap("<div class=‘background-fixed‘></div>");
 4     $(‘.flowDev‘).scroll(function () {
 5         var scroH = $(‘.flowDev‘).scrollTop();
 6         if (scroH >= navH) {
 7             $(".fixedTop").css({"position": "fixed", "top": 0});
 8             $(".fixedTop").css({"z-index": "999"});
 9             $(".fixedTop").css({"background": "#f4f4f4"});
10             $(".fixedTop").css({"width": "94%"});
11         } else if (scroH < navH) {
12             $(".fixedTop").css({"position": "static"});
13             $(".fixedTop").css({"background": "#fff"});
14             $(".fixedTop").css({"width": "100%"});
15         }
16     });