jquery实现联想词搜索框和搜索结果分页的示例

时间：2021-05-26

index.htm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://pleter.Select = function (options, input, select, config) { var CLASSES = { ACTIVE: "ac_over" }; var listItems, active = -1, data, term = "", needsInit = true, element, list; // Create results function init() { if (!needsInit) return; element = $("<div/>") .hide() .addClass(options.resultsClass) .css("position", "absolute") .appendTo(document.body); list = $("<ul/>").appendTo(element).mouseover( function(event) { if(target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') { active = $("li", list).removeClass(CLASSES.ACTIVE).index(target(event)); $(target(event)).addClass(CLASSES.ACTIVE); } }).click(function(event) { $(target(event)).addClass(CLASSES.ACTIVE); select(); // TODO provide option to avoid setting focus again after selection? useful for cleanup-on-focus input.focus(); return false; }).mousedown(function() { config.mouseDownOnSelect = true; }).mouseup(function() { config.mouseDownOnSelect = false; }); if( options.width > 0 ) element.css("width", options.width); needsInit = false; } function target(event) { var element = event.target; while(element && element.tagName != "LI") element = element.parentNode; // more fun with IE, sometimes event.target is empty, just ignore it then if(!element) return []; return element; } function moveSelect(step) { listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE); movePosition(step); var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE); if(options.scroll) { var offset = 0; listItems.slice(0, active).each(function() { offset += this.offsetHeight; }); if((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) { list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight()); } else if(offset < list.scrollTop()) { list.scrollTop(offset); } } }; function movePosition(step) { active += step; if (active < 0) { active = listItems.size() - 1; } else if (active >= listItems.size()) { active = 0; } } function limitNumberOfItems(available) { return options.max && options.max < available ? options.max : available; } function fillList() { list.empty(); var max = limitNumberOfItems(data.length); for (var i=0; i < max; i++) { if (!data[i]) continue; var formatted = options.formatItem(data[i].data, i+1, max, data[i].value, term); if ( formatted === false ) continue; var li = $("<li/>").html( options.highlight(formatted, term) ).addClass(i%2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0]; $.data(li, "ac_data", data[i]); } listItems = list.find("li"); if ( options.selectFirst ) { listItems.slice(0, 1).addClass(CLASSES.ACTIVE); active = 0; } // apply bgiframe if available if ( $.fn.bgiframe ) list.bgiframe(); } return { display: function(d, q) { init(); data = d; term = q; fillList(); }, next: function() { moveSelect(1); }, prev: function() { moveSelect(-1); }, pageUp: function() { if (active != 0 && active - 8 < 0) { moveSelect( -active ); } else { moveSelect(-8); } }, pageDown: function() { if (active != listItems.size() - 1 && active + 8 > listItems.size()) { moveSelect( listItems.size() - 1 - active ); } else { moveSelect(8); } }, hide: function() { element && element.hide(); listItems && listItems.removeClass(CLASSES.ACTIVE); active = -1; }, visible : function() { return element && element.is(":visible"); }, current: function() { return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0]); }, show: function() { var offset = $(input).offset(); element.css({ width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(), top: offset.top + input.offsetHeight, left: offset.left }).show(); if(options.scroll) { list.scrollTop(0); list.css({ maxHeight: options.scrollHeight, overflow: 'auto' }); if($.browser.msie && typeof document.body.style.maxHeight === "undefined") { var listHeight = 0; listItems.each(function() { listHeight += this.offsetHeight; }); var scrollbarsVisible = listHeight > options.scrollHeight; list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight ); if (!scrollbarsVisible) { // IE doesn't recalculate width when scrollbar disappears listItems.width( list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")) ); } } } }, selected: function() { var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE); return selected && selected.length && $.data(selected[0], "ac_data"); }, emptyList: function (){ list && list.empty(); }, unbind: function() { element && element.remove(); } };}; $.fn.selection = function(start, end) { if (start !== undefined) { return this.each(function() { if( this.createTextRange ){ var selRange = this.createTextRange(); if (end === undefined || start == end) { selRange.move("character", start); selRange.select(); } else { selRange.collapse(true); selRange.moveStart("character", start); selRange.moveEnd("character", end); selRange.select(); } } else if( this.setSelectionRange ){ this.setSelectionRange(start, end); } else if( this.selectionStart ){ this.selectionStart = start; this.selectionEnd = end; } }); } var field = this[0]; if ( field.createTextRange ) { var range = document.selection.createRange(), orig = field.value, teststring = "<->", textLength = range.text.length; range.text = teststring; var caretAt = field.value.indexOf(teststring); field.value = orig; this.selection(caretAt, caretAt + textLength); return { start: caretAt, end: caretAt + textLength } } else if( field.selectionStart !== undefined ){ return { start: field.selectionStart, end: field.selectionEnd } }}; })(jQuery);

jquery.pagination.js

/** * This jQuery plugin displays pagination links inside the selected elements. * * @author Gabriel Birke (birke *at* d-scribe *dot* de) * @version 1.2 * @param {int} maxentries Number of entries to paginate * @param {Object} opts Several options (see README for documentation) * @return {Object} jQuery Object */jQuery.fn.pagination = function(maxentries, opts){ opts = jQuery.extend({ items_per_page:10, num_display_entries:10, current_page:0, num_edge_entries:0, link_to:"#", prev_text:"Prev", next_text:"Next", ellipse_text:"...", prev_show_always:true, next_show_always:true, callback:function(){return false;} },opts||{}); return this.each(function() { /** * 计算最大分页显示数目 */ function numPages() { return Math.ceil(maxentries/opts.items_per_page); } /** * 极端分页的起始和结束点，这取决于current_page 和 num_display_entries. * @返回 {数组(Array)} */ function getInterval() { var ne_half = Math.ceil(opts.num_display_entries/2); var np = numPages(); var upper_limit = np-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(opts.num_display_entries, np); return [start,end]; } /** * 分页链接事件处理函数 * @参数 {int} page_id 为新页码 */ function pageSelected(page_id, evt){ current_page = page_id; drawLinks(); var continuePropagation = opts.callback(page_id, panel); if (!continuePropagation) { if (evt.stopPropagation) { evt.stopPropagation(); } else { evt.cancelBubble = true; } } return continuePropagation; } /** * 此函数将分页链接插入到容器元素中 */ function drawLinks() { panel.empty(); var interval = getInterval(); var np = numPages(); // 这个辅助函数返回一个处理函数调用有着正确page_id的pageSelected。 var getClickHandler = function(page_id) { return function(evt){ return pageSelected(page_id,evt); } } //辅助函数用来产生一个单链接(如果不是当前页则产生span标签) var appendItem = function(page_id, appendopts){ page_id = page_id<0?0:(page_id<np?page_id:np-1); // 规范page id值 appendopts = jQuery.extend({text:page_id+1, classes:""}, appendopts||{}); if(page_id == current_page){ var lnk = jQuery(""+(appendopts.text)+""); }else{ var lnk = jQuery("<a>"+(appendopts.text)+"</a>") .bind("click", getClickHandler(page_id)) .attr('href', opts.link_to.replace(/__id__/,page_id)); } if(appendopts.classes){lnk.addClass(appendopts.classes);} panel.append(lnk); } // 产生"Previous"-链接 if(opts.prev_text && (current_page > 0 || opts.prev_show_always)){ appendItem(current_page-1,{text:opts.prev_text, classes:"prev"}); } // 产生起始点 if (interval[0] > 0 && opts.num_edge_entries > 0) { var end = Math.min(opts.num_edge_entries, interval[0]); for(var i=0; i<end; i++) { appendItem(i); } if(opts.num_edge_entries < interval[0] && opts.ellipse_text) { jQuery(""+opts.ellipse_text+"").appendTo(panel); } } // 产生内部的些链接 for(var i=interval[0]; i<interval[1]; i++) { appendItem(i); } // 产生结束点 if (interval[1] < np && opts.num_edge_entries > 0) { if(np-opts.num_edge_entries > interval[1]&& opts.ellipse_text) { jQuery(""+opts.ellipse_text+"").appendTo(panel); } var begin = Math.max(np-opts.num_edge_entries, interval[1]); for(var i=begin; i<np; i++) { appendItem(i); } } // 产生 "Next"-链接 if(opts.next_text && (current_page < np-1 || opts.next_show_always)){ appendItem(current_page+1,{text:opts.next_text, classes:"next"}); } } //从选项中提取current_page var current_page = opts.current_page; //创建一个显示条数和每页显示条数值 maxentries = (!maxentries || maxentries < 0)?1:maxentries; opts.items_per_page = (!opts.items_per_page || opts.items_per_page < 0)?1:opts.items_per_page; //存储DOM元素，以方便从所有的内部结构中获取 var panel = jQuery(this); // 获得附加功能的元素 this.selectPage = function(page_id){ pageSelected(page_id);} this.prevPage = function(){ if (current_page > 0) { pageSelected(current_page - 1); return true; } else { return false; } } this.nextPage = function(){ if(current_page < numPages()-1) { pageSelected(current_page+1); return true; } else { return false; } } // 所有初始化完成，绘制链接 drawLinks(); // 回调函数 opts.callback(current_page, this); });}

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jquery实现联想词搜索框和搜索结果分页的示例

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