js分页的实现代码
<!DOCTYPE html> <html lang="en"> <head> <title>index.html</title> <meta charset="UTF-8"> <script type="text/javascript" src="js/page.js"></script> <link rel="stylesheet" type="text/css" href="css/page.css"> </head> <body> <div class="page" name="page"></div> </body> <script type="text/javascript"> function getPage(){ page.refresh(page.pageNumber,page.pageCount); } page.init("getPage"); page.refresh(1,100); </script> </html>
page.js
var page = { pageNumber:1, pageCount:100, calls:[], target:{} } var EventUtil = { addHandler:function(element,type,handler){ if(element.addEventListener){ element.addEventListener(type,handler,false); }else if(element.attachEvent){ element.attachEvent("on"+type,handler); }else{ element["on"+type] = handler; } }, removeHandler:function(element,type,handler){ if(element.removeEventListener){ element.removeEventListener(type,handler,false); }else if(element.detachEvent){ element.detachEvent("on"+type,handler); }else{ element["on"+type] = null; } } } page.bindEvent = function(){ var contents = document.getElementsByName("page"); for(var i = 0; i< contents.length; i++) { if(contents[i].className = 'page') { page.target = contents[i]; } } EventUtil.addHandler(page.target, "click", page.clickEventHandler); }; page.clickEventHandler = function(event){ var className = event.target.className; if(className =='page_num' || className == 'page_num more'){ var pageNum = event.target.innerHTML; if(pageNum == '...'){ pageNum = event.target.getAttribute("pageNum"); } page.pageNumber = parseInt(pageNum); page.doCallBack(); }else if(className == 'next_page'){ if(page.pageNumber < page.pageCount){ page.pageNumber++; page.doCallBack(); } }else if(className == 'pre_page'){ if(page.pageNumber > 1){ page.pageNumber--; page.doCallBack(); } } } page.refresh = function(pageNumber,pageCount){ page.pageNumber = pageNumber; page.pageCount = pageCount; page.target.innerHTML = ""; page.target.innerHTML = page.createPage(); } page.createPage = function(){ var html = []; html.push('<a class="page_num active">',page.pageNumber,'</a>'); var i = page.pageNumber - 1; for(i;i > page.pageNumber - 2; i--){ if(i >= 1){ html.unshift('<a class="page_num">',i,'</a>'); } } if(i>=1){ html.unshift('<a class="page_num more" pageNum=',i,'>...</a>'); html.unshift('<a class="page_num">',1,'</a>'); } var j = page.pageNumber + 1; for(j;j <= page.pageNumber + 1; j++){ if(j <= page.pageCount){ html.push('<a class="page_num">',j,'</a>'); } } if(j <= page.pageCount) { html.push('<a class="page_num more" pageNum=',j,'>...</a>'); html.push('<a class="page_num">',page.pageCount,'</a>'); } html.unshift('<a class="pre_page">上一页</a>'); html.push('<a class="next_page">下一页</a>'); return html.join(""); } page.doCallBack = function(){ if(page.calls.length == 1 && window[page.calls[0]]){ window[page.calls[0]](); }else if(page.calls.length == 2 && window[page.calls[0]][page.calls[1]]){ window[page.calls[0]][page.calls[1]](); }else if (page.calls.length == 3 && window[page.calls[0]][page.calls[1]][page.calls[2]]) { window[page.calls[0]][page.calls[1]][page.calls[2]](); } } page.init = function(callback){ page.bindEvent(); if(callback){ page.calls = callback.split('.'); } }
page.css
/*分页*/ .page { margin:30px auto; width:310px;} .page a{ padding:3px 5px; border:1px solid #000; color:#000; margin:0 1px;cursor: pointer;} .page .more{ border:none; padding:3px 0; margin:0; position:relative; top:-3px;} .page .active{ background:#000; color:#fff;} .page a:first-child{ margin-left:0;}
