JQuery implements the return to top function. jquery implements the return to top function.

JQuery implements the return to top function. jquery implements the return to top function.

The code is very simple. There is not much nonsense here. Let's look at the code.

HTML:

<! -- Go to Top --> <div id = "Fixed"> <a id = "goTop" class = "fl" title = "Go Top" href = "javascript :; "> go to the top </a> </div> <! -- Go to Top end -->

CSS:

. Fl {display: block; float: left; width: 50px; height: 50px; text-align: center; background-color: # eaeaea; background-image: url (.. /images/toTop.png );}. fl: hover {background-color: # f48942; background-image: url (.. /images/toTop.png);} # Fixed {position: fixed; _ position: absolute; z-index: 100; bottom: 70px; left: 50%; margin-left: 530px; _ bottom: auto; _ top: expression(document.documentElement.scrollTop+document.doc umentElement. clientHeight-this.offsetHeight-70); width: 50px; text-indent:-40000px; background: # fff}/* top end */

Js:

/* Top setting function */$ (function () {$ (window ). bind ('scroll', {fixedOffsetBottom: parseint('{fixed'}.css ('bottom ')}, function (e) {var scrollTop = $ (window ). scrollTop (); var referFooter =$ ('# footer'); scrollTop> 100? $ ('# GoTop'). show (): $ ('# goTop'). hide (); if (! /Msie 6/I. test (navigator. userAgent) {if ($ (window ). height ()-(referFooter. offset (). top-$ (window ). scrollTop ()> e. data. fixedOffsetBottom) {{('{fixed'}.css ('bottom ', $ (window ). height ()-(referFooter. offset (). top-$ (window ). scrollTop ()} else {response ('{fixed'}.css ('bottom ', e. data. fixedOffsetBottom) }}); $ ('# goTop '). click (function () {$ ('body, html '). stop (). animate ({'scrolltop ': 0, 'duration': 100, 'easing': 'wait-in'}) ;});/* Top-Down Function end */

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