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JQuery implements the return to top Function

Source: Internet
Author: User
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Sort out two implementation functions, one is the return top in the lower right corner, and the other is the return top on the right, respectively

First implementation

I. JSP or HTML (subject structure)

Add in body

<body id="top"><p id="back-to-top"><a href="#top"><span></span></a></p></body>

Ii. CSS (style-based) 

<Style> p # back-to-top {position: fixed; bottom: 50px; right: 50px;} p # back-to-top a {text-align: center; text-decoration: none; color: # d1d1d1; display: block; width: 50px; /* use the transition attribute in CSS3 to add the gradient effect to the text in the jump link */-moz-transition: color 1 s;-webkit-transition: color 1 s;-o-transition: color 1 s;} p # back-to-top a: hover {color: #979797;} p # back-to-top a span {background: # d1d1d1 url (/img/back_to_top.png) no-repeat center; border-radius: 6px; display: block; height: 50px; width: 50px; margin-bottom: 5px; /* use the transition attribute in CSS3 to add the gradient effect to the <span> label background color */-moz-transition: background 1 s;-webkit-transition: background 1 s; -o-transition: background 1 s;} # back-to-top a: hover span {background: #979797 url (/img/back_to_top.png) no-repeat center ;} </style>
Image Search for resources online

Iii. jQuery (dynamic effects)

<Script> $ (document ). ready (function () {// first hide # back-to-top $ ("# back-to-top "). hide (); // when the position of the scroll bar is below 100 pixels from the top, the jump link appears, otherwise it disappears $ (function () {$ (window ). scroll (function () {if ($ (window ). scrollTop () & gt; 100) {$ ("# back-to-top "). fadeIn (1500);} else {$ ("# back-to-top "). fadeOut (1500) ;}}); // when you click the jump link, return to the top position of the page $ ("# back-to-top "). click (function () {$ ('body, html '). animate ({scrollTop: 0}, 500); return false ;}); </script>



Second Implementation 

<style>.backToTop {display: none;width: 18px;line-height: 1.2;padding: 5px 0;background-color: #000;color: #fff;font-size: 12px;text-align: center;position: fixed;_position: absolute;right: 10px;bottom: 100px;_bottom: "auto";cursor: pointer;opacity: .6;filter: Alpha(opacity = 60);}</style>

<Script> (function () {var $ backToTopTxt = "Back to Top" $ backToTopEle =$ ('<div class = "backToTop"> </div> '). appendTo ($ ("body ")). text ($ backToTopTxt ). attr ("title", $ backToTopTxt ). click (function () {$ ("html, body "). animate ({scrollTop: 0}, 120) ;}) $ backtopfun = function () {var st = $ (document ). scrollTop (), winh = $ (window ). height (); (st> 0 )? $ BackToTopEle. show (): $ backToTopEle. hide (); // locate if (! Window. XMLHttpRequest) {export backtotopele.css ("top", st + winh-166) ;};$ (window ). bind ("scroll", $ backToTopFun); $ (function () {$ backtopfun () ;}) (); </script>



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