Strtus2 的分页实现(一)

第一，导入js

function showPages(name) { //初始化属性
	this.name = name;      //对象名称
	this.page = 1;         //当前页数
	this.pageCount = 1;    //总页数
	this.argName = 'page'; //参数名
	this.showTimes = 1;    //打印次数
}

showPages.prototype.getPage = function(){ //丛url获得当前页数,如果变量重复只获取最后一个
	var args = location.search;
	var reg = new RegExp('[\?&]?' + this.argName + '=([^&]*)[&$]?', 'gi');
	var chk = args.match(reg);
	this.page = RegExp.$1;
}
showPages.prototype.checkPages = function(){ //进行当前页数和总页数的验证
	if (isNaN(parseInt(this.page))) this.page = 1;
	if (isNaN(parseInt(this.pageCount))) this.pageCount = 1;
	if (this.page < 1) this.page = 1;
	if (this.pageCount < 1) this.pageCount = 1;
	if (this.page > this.pageCount) this.page = this.pageCount;
	this.page = parseInt(this.page);
	this.pageCount = parseInt(this.pageCount);
}
showPages.prototype.createHtml = function(){ //生成html代码
	var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;
			strHtml += '<div id="count">page: ' + this.page + ' / ' + this.pageCount + '</div>';
			strHtml += '<div id="number">';
			if (prevPage < 1) {
				strHtml += '<span title="最前页">&#171;</span>';
				strHtml += '<span title="前一页">&#139;</span>';
			} else {
				strHtml += '<span title="最前页"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
				strHtml += '<span title="前一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#139;</a></span>';
			}
			if (this.page % 10 ==0) {
				var startPage = this.page - 9;
			} else {
				var startPage = this.page - this.page % 10 + 1;
			}
			if (startPage > 10) strHtml += '<span title="Prev 10 Pages"><a href="javascript:' + this.name + '.toPage(' + (startPage - 1) + ');">...</a></span>';
			for (var i = startPage; i < startPage + 10; i++) {
				if (i > this.pageCount) break;
				if (i == this.page) {
					strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
				} else {
					strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
				}
			}
			if (this.pageCount >= startPage + 10) strHtml += '<span title="Next 10 Pages"><a href="javascript:' + this.name + '.toPage(' + (startPage + 10) + ');">...</a></span>';
			if (nextPage > this.pageCount) {
				strHtml += '<span title="下一页">&#155;</span>';
				strHtml += '<span title="最后页">&#187;</span>';
			} else {
				strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
				strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
			}
			strHtml += '</span><br />';
	return strHtml;
}
showPages.prototype.createUrl = function (page) { //生成页面跳转url
	if (isNaN(parseInt(page))) page = 1;
	if (page < 1) page = 1;
	if (page > this.pageCount) page = this.pageCount;
	var url = location.protocol + '//' + location.host + location.pathname;
	var args = location.search;
	var reg = new RegExp('([\?&]?)' + this.argName + '=[^&]*[&$]?', 'gi');
	args = args.replace(reg,'$1');
	if (args == '' || args == null) {
		args += '?' + this.argName + '=' + page;
	} else if (args.substr(args.length - 1,1) == '?' || args.substr(args.length - 1,1) == '&') {
			args += this.argName + '=' + page;
	} else {
			args += '&' + this.argName + '=' + page;
	}
	return url + args;
}
showPages.prototype.toPage = function(page){ //页面跳转
	var turnTo = 1;
	if (typeof(page) == 'object') {
		turnTo = page.options[page.selectedIndex].value;
	} else {
		turnTo = page;
	}
	self.location.href = this.createUrl(turnTo);
}
showPages.prototype.printHtml = function(mode){ //显示html代码
	this.getPage();
	this.checkPages();
	this.showTimes += 1;
	document.write('<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages"></div>');
	document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = this.createHtml();

}
showPages.prototype.formatInputPage = function(e){ //限定输入页数格式
	var ie = navigator.appName=="Microsoft Internet Explorer"?true:false;
	if(!ie) var key = e.which;
	else var key = event.keyCode;
	if (key == 8 || key == 46 || (key >= 48 && key <= 57)) return true;
	return false;
}

第二，导入css

.pagination {
            font:11px Verdana,Tahoma,Helvetica,sans-serif;
            margin:0 auto;
            text-align:center;
            height:13px;.height:13px;
        }
        
.pagination a {
    text-decoration: none;
	border: solid 1px #AAE;
	color: #15B;
}

.pagination a, .pagination span {
    display: block;
    float: left;letter-spacing:-1px;font-weight:normal;
    padding: 0.1em 0.2em;    /* padding: 0.1em 0.5em  */
    margin-right: 1px;
	min-width:1em;
	text-align:center;
	height:13px;.height:13px;
}

.pagination .current {
    background: #2F96E4;
    color: #fff;
	border: solid 1px #AAE;
}

.pagination .current.prev, .pagination .current.next{
	color:#999;
	border-color:#999;
	background:#fff;
}

第三，引用css和js
<link rel="stylesheet" href="_public/css/pagination.css"  type="text/css"/>
<script type="text/javascript" src="_public/js/jquery-page1.0.js"></script>
第四，调用

                var pg = new showPages('pg');
                pg.pageCount = ${totalPage};  // 定义总页数(必要)
                pg.printHtml("");

第五，后台只需要传总页数了就可以了