锚点的New Style
2013-04-11 13:51 梁小白 阅读(262) 评论(0) 编辑 收藏 举报传统的锚点都用<a name="#tag" />实现,下面的代码实现一个可以滚动的样式,比较友好。
锚点的New Style:
Jquery 扩展
//** Scrolling HTML Bookmarks script- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com. //** Available/ usage terms at http://www.dynamicdrive.com/ (April 11th, 09') //** Updated Nov 10th, 09'- Fixed anchor jumping issue in IE7 var bookmarkscroll={ setting: {duration:1000, yoffset:0}, //{duration_of_scroll_milliseconds, offset_from_target_element_to_rest} topkeyword: '#top', //keyword used in your anchors and scrollTo() to cause script to scroll page to very top scrollTo:function(dest, options, hash){ var $=jQuery, options=options || {} var $dest=(typeof dest=="string" && dest.length>0)? (dest==this.topkeyword? 0 : $('#'+dest)) : (dest)? $(dest) : [] //get element based on id, topkeyword, or dom ref if ($dest===0 || $dest.length==1 && (!options.autorun || options.autorun && Math.abs($dest.offset().top+(options.yoffset||this.setting.yoffset)-$(window).scrollTop())>5)){ this.$body.animate({scrollTop: ($dest===0)? 0 : $dest.offset().top+(options.yoffset||this.setting.yoffset)}, (options.duration||this.setting.duration), function(){ if ($dest!==0 && hash) location.hash=hash }) } }, urlparamselect:function(){ var param=window.location.search.match(/scrollto=[\w\-_,]+/i) //search for scrollto=divid return (param)? param[0].split('=')[1] : null }, init:function(){ jQuery(document).ready(function($){ var mainobj=bookmarkscroll mainobj.$body=(window.opera)? (document.compatMode=="CSS1Compat"? $('html') : $('body')) : $('html,body') var urlselectid=mainobj.urlparamselect() //get div of page.htm?scrollto=divid if (urlselectid) //if id defined setTimeout(function(){mainobj.scrollTo(document.getElementById(urlselectid) || $('a[name='+urlselectid+']:eq(0)').get(0), {autorun:true})}, 100) $('a[href^="#"]').each(function(){ //loop through links with "#" prefix var hashvalue=this.getAttribute('href').match(/#\w+$/i) //filter links at least 1 character following "#" prefix hashvalue=(hashvalue)? hashvalue[0].substring(1) : null //strip "#" from hashvalue if (this.hash.length>1){ //if hash value is more than just "#" var $bookmark=$('a[name='+this.hash.substr(1)+']:eq(0)') if ($bookmark.length==1 || this.hash==mainobj.topkeyword){ //if HTML anchor with given ID exists or href==topkeyword if ($bookmark.length==1 && !document.all) //non IE, or IE7+ $bookmark.html('.').css({position:'absolute', fontSize:1, visibility:'hidden'}) $(this).click(function(e){ mainobj.scrollTo((this.hash==mainobj.topkeyword)? mainobj.topkeyword : $bookmark.get(0), {}, this.hash) e.preventDefault() }) } } }) }) } } bookmarkscroll.init()
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