HTML代码:- <div class="float" id="float">
- 我是个腼腆羞涩的浮动层...
- </div>
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JS代码:- $.fn.smartFloat = function() {
- var position = function(element) {
- var top = element.position().top, pos = element.css("position");
- $(window).scroll(function() {
- var scrolls = $(this).scrollTop();
- if (scrolls > top) {
- if (window.XMLHttpRequest) {
- element.css({
- position: "fixed",
- top: 0
- });
- } else {
- element.css({
- top: scrolls
- });
- }
- }else {
- element.css({
- position: "absolute",
- top: top
- });
- }
- });
- };
- return $(this).each(function() {
- position($(this));
- });
- };
- //绑定
- $("#float").smartFloat();
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