扩展jquery.pagination支持Ajax及带参数请求

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由于项目需要，扩展了Jquery 的Pagination。使得jquery.pagination，可能直接带参数Ajax请求服务器并更新对应容器的内容。

记录下来：

原文地址：http://blog.csdn.net/Vange/archive/2010/07/20/5748477.aspx

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使用方法：

相关的JQuery库及CSS请自行下载。

demo_vange.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Pagination Demo I - Simple pagination</title> <link rel="stylesheet" href="../pagination.css" mce_href="pagination.css" /> <link rel="stylesheet" href="demo.css" mce_href="demo.css" /> <mce:script type="text/javascript" src="lib/jquery.min.js" mce_src="lib/jquery.min.js"></mce:script> <mce:script type="text/javascript" src="../jquery.pagination.js" mce_src="jquery.pagination.js"></mce:script> <mce:script type="text/javascript"></mce:script> </head> <body> <h1>jQuery Pagination Plugin Demo</h1> <div id="Pagination"></div> <br style="clear:both;" mce_style="clear:both;" /> <div id="Searchresult"> This content will be replaced when pagination inits. </div>  <div id="hiddenresult" style="display:none;" mce_style="display:none;"> <div class="result"><p>Globally maximize granular "outside the box" thinking vis-a-vis quality niches. Proactively formulate 24/7 results whereas 2.0 catalysts for change. Professionally implement 24/365 niches rather than client-focused users.</p> <p> Competently engineer high-payoff "outside the box" thinking through cross functional benefits. Proactively transition intermandated processes through open-source niches. Progressively engage maintainable innovation and extensible interfaces.</p> </div> <div class="result"><p>Credibly fabricate e-business models for end-to-end niches. Compellingly disseminate integrated e-markets without ubiquitous services. Credibly create equity invested channels with multidisciplinary human capital.</p> <p> Interactively integrate competitive users rather than fully tested infomediaries. Seamlessly initiate premium functionalities rather than impactful architectures. Rapidiously leverage existing resource-leveling processes via user-centric portals.</p> </div> <div class="result"><p>Monotonectally initiate unique e-services vis-a-vis client-centric deliverables. Quickly impact parallel opportunities with B2B bandwidth. Synergistically streamline client-focused infrastructures rather than B2C e-commerce.</p> <p> Phosfluorescently fabricate 24/365 e-business through 24/365 total linkage. Completely facilitate high-quality systems without stand-alone strategic theme areas.</p> </div> </div> <div id="footer"> Copyright © 2010 by <a href="http://www.d-scribe.de/" mce_href="http://www.d-scribe.de/">describe europe Ltd.</a>. </div> </body></html>

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修改后的Jquery 的Pagination：jquery.pagination.js

/** * This jQuery plugin displays pagination links inside the selected elements. * * This plugin needs at least jQuery 1.4.2 * * @author Gabriel Birke (birke *at* d-scribe *dot* de) * @version 2.0rc * @param {int} maxentries Number of entries to paginate * @param {Object} opts Several options (see README for documentation) * @return {Object} jQuery Object */ (function($){/** * @class Class for calculating pagination values */$.PaginationCalculator = function(maxentries, opts) {this.maxentries = maxentries;this.opts = opts;}$.extend($.PaginationCalculator.prototype, {/** * Calculate the maximum number of pages * @method * @returns {Number} */numPages:function() {return Math.ceil(this.maxentries/this.opts.items_per_page);},/** * Calculate start and end point of pagination links depending on * current_page and num_display_entries. * @returns {Array} */getInterval:function(current_page) {var ne_half = Math.ceil(this.opts.num_display_entries/2);var np = this.numPages();var upper_limit = np - this.opts.num_display_entries;var start = current_page > ne_half ? Math.max( Math.min(current_page - ne_half, upper_limit), 0 ) : 0;var end = current_page > ne_half?Math.min(current_page+ne_half, np):Math.min(this.opts.num_display_entries, np);return {start:start, end:end};}});// Initialize jQuery object container for pagination renderers$.PaginationRenderers = {}/** * @class Default renderer for rendering pagination links */$.PaginationRenderers.defaultRenderer = function(maxentries, opts) {this.maxentries = maxentries;this.opts = opts;this.pc = new $.PaginationCalculator(maxentries, opts);}$.extend($.PaginationRenderers.defaultRenderer.prototype, {/** * Helper function for generating a single link (or a span tag if it's the current page) * @param {Number} page_id The page id for the new item * @param {Number} current_page * @param {Object} appendopts Options for the new item: text and classes * @returns {jQuery} jQuery object containing the link */createLink:function(page_id, current_page, appendopts){var lnk, np = this.pc.numPages();page_id = page_id<0?0:(page_id<np?page_id:np-1); // Normalize page id to sane valueappendopts = $.extend({text:page_id+1, classes:""}, appendopts||{});if(page_id == current_page){lnk = $("<span class='current'>" + appendopts.text + "</span>");}else{lnk = $("<a>" + appendopts.text + "</a>").attr('href', this.opts.link_to.replace(/__id__/,page_id));}if(appendopts.classes){ lnk.addClass(appendopts.classes); }lnk.data('page_id', page_id);return lnk;},// Generate a range of numeric links appendRange:function(container, current_page, start, end) {var i;for(i=start; i<end; i++) {this.createLink(i, current_page).appendTo(container);}},getLinks:function(current_page, eventHandler) {var begin, end,interval = this.pc.getInterval(current_page),np = this.pc.numPages(),fragment = $("<div class='pagination'></div>");// Generate "Previous"-Linkif(this.opts.prev_text && (current_page > 0 || this.opts.prev_show_always)){fragment.append(this.createLink(current_page-1, current_page, {text:this.opts.prev_text, classes:"prev"}));}// Generate starting pointsif (interval.start > 0 && this.opts.num_edge_entries > 0){end = Math.min(this.opts.num_edge_entries, interval.start);this.appendRange(fragment, current_page, 0, end);if(this.opts.num_edge_entries < interval.start && this.opts.ellipse_text){jQuery("<span>"+this.opts.ellipse_text+"</span>").appendTo(fragment);}}// Generate interval linksthis.appendRange(fragment, current_page, interval.start, interval.end);// Generate ending pointsif (interval.end < np && this.opts.num_edge_entries > 0){if(np-this.opts.num_edge_entries > interval.end && this.opts.ellipse_text){jQuery("<span>"+this.opts.ellipse_text+"</span>").appendTo(fragment);}begin = Math.max(np-this.opts.num_edge_entries, interval.end);this.appendRange(fragment, current_page, begin, np);}// Generate "Next"-Linkif(this.opts.next_text && (current_page < np-1 || this.opts.next_show_always)){fragment.append(this.createLink(current_page+1, current_page, {text:this.opts.next_text, classes:"next"}));}$('a', fragment).click(eventHandler);return fragment;}});// Extend jQuery$.fn.pagination = function(maxentries, opts){ // Initialize options with default valuesopts = jQuery.extend({items_per_page:10,num_display_entries:10,current_page:0,num_edge_entries:0,link_to:"javascript:;",prev_text:"上页",next_text:"下页",ellipse_text:"...",prev_show_always:true,next_show_always:true,renderer:"defaultRenderer",callback:readRemotePage, showRemotePageCallback:showRemotePageCallback,id:"default_pagination",url:"#",loading:"加载中...",params:{},showResultContainer:null,showResultCallback:function(data){return false;}},opts||{}); var containers = this,renderer, links, current_page; var tipId = "callbackTip_" + opts.id; var tipDiv = '<div id="'+ tipId +'" style="color:red;font-size:12px;position:absolute;background-color:#F8EF00;" mce_style="color:red;font-size:12px;position:absolute;background-color:#F8EF00;">'+ opts.loading +'</div>'; $("body").append(tipDiv); $(this).ajaxStart(function(){ if(opts.showResultContainer != null){ var tip = $("#" + tipId); var offset = $("#" + opts.showResultContainer).offset(); tip.offset(offset); tip.show(); } }); $(this).ajaxStop(function(){ if(opts.showResultContainer != null){ var tip = $("#" + tipId); tip.hide(); } }); /** * default action to get remote page content */function readRemotePage(current_page,containers){ var params = jQuery.extend(opts.params,{}); params.pageNum = current_page + 1;$.get(opts.url,params,opts.showRemotePageCallback);return false;}/** * callback function to show remote page content */function showRemotePageCallback(data){if(opts.showResultContainer != null){$("#" + opts.showResultContainer).html(data);}else{opts.showResultCallback(data);}}/** * This is the event handling function for the pagination links. * @param {int} page_id The new page number */function pageSelected(evt){var links, current_page = $(evt.target).data('page_id');containers.data('current_page', current_page);links = renderer.getLinks(current_page, pageSelected);containers.empty();links.appendTo(containers);var continuePropagation = opts.callback(current_page, containers);if (!continuePropagation) {if (evt.stopPropagation) {evt.stopPropagation();}else {evt.cancelBubble = true;}}return continuePropagation;}current_page = opts.current_page;containers.data('current_page', current_page);// Create a sane value for maxentries and items_per_pagemaxentries = (!maxentries || maxentries < 0)?1:maxentries;opts.items_per_page = (!opts.items_per_page || opts.items_per_page < 0)?1:opts.items_per_page;if(!$.PaginationRenderers[opts.renderer]){throw new ReferenceError("Pagination renderer '" + opts.renderer + "' was not found in jQuery.PaginationRenderers object.");}renderer = new $.PaginationRenderers[opts.renderer](maxentries, opts);containers.each(function() {// Attach control functions to the DOM element this.selectPage = function(page_id){ pageSelected(page_id);}this.prevPage = function(){var current_page = containers.data('current_page');if (current_page > 0) {pageSelected(current_page - 1);return true;}else {return false;}}this.nextPage = function(){var current_page = containers.data('current_page');if(current_page < numPages()-1) {pageSelected(current_page+1);return true;}else {return false;}}});// When all initialisation is done, draw the linkslinks = renderer.getLinks(current_page, pageSelected);containers.empty();links.appendTo(containers);// call callback functionopts.callback(current_page, containers);}})(jQuery);