123456789101112131415 |
- (function() {
- var $backToTopTxt = "返回顶部", $backToTopEle = $('<div class="backToTop"></div>').appendTo($("body"))
- .text($backToTopTxt).attr("title", $backToTopTxt).click(function() {
- $("html, body").animate({ scrollTop: 0 }, 120);
- }), $backToTopFun = function() {
- var st = $(document).scrollTop(), winh = $(window).height();
- (st > 0)? $backToTopEle.show(): $backToTopEle.hide();
- //IE6下的定位
- if (!window.XMLHttpRequest) {
- $backToTopEle.css("top", st + winh - 106);
- }
- };
- $(window).bind("scroll", $backToTopFun);
- $(function() { $backToTopFun(); });
- })();
|