www.gusucode.com > 31:【198-3873】蓝色新闻博客自媒体头条网织梦模板(带手机端带投稿) > 31:【198-3873】蓝色新闻博客自媒体头条网织梦模板(带手机端带投稿)/member/templets/images/backtop.js
//javascript Document function UiMarker(){ this.init(); } UiMarker.prototype = { constructor: UiMarker, init: function(){ this._initBackTop(); }, _initBackTop: function(){ var $backTop = this.$backTop = $('<div class="cbbfixed">'+ '<a class="gotop cbbtn">'+ '<span class="up-icon"></span>'+ '</a>'+ '</div>'); $('body').append($backTop); $backTop.click(function(){ $("html, body").animate({ scrollTop: 0 }, 120); }); var timmer = null; $(window).bind("scroll",function() { var d = $(document).scrollTop(), e = $(window).height(); 0 < d ? $backTop.css("bottom", "10px") : $backTop.css("bottom", "-90px"); clearTimeout(timmer); timmer = setTimeout(function() { clearTimeout(timmer) },100); }); } } var uiMarker = new UiMarker();