仿javaeye的js分页类

/*

showPages v1.1
----------------------
var pg = new showPages('pg');
pg.pageCount = 12; //定义总页数(必要)
pg.argName = 'p';    //定义参数名(可选,缺省为page)
pg.printHtml();        //显示页数


Supported in Internet Explorer, Mozilla Firefox
*/

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(mode){ //生成html代码
	var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;

	//
			strHtml += '<span class="count">共' + this.pageCount + '页 &nbsp当前第 <strong>' + this.page + '</strong> 页&nbsp;</span>';
			strHtml += '<span class="number">';
			if (prevPage < 1) {
				strHtml += '<span title="First Page">首页</span>&nbsp;';
				strHtml += '<span title="Prev Page">上一页</span>&nbsp;';
			} else {
				strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">首页</a></span>&nbsp;';
				strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">上一页</a></span>&nbsp;';
			}
			if (this.page != 1) strHtml += '<span title="Page 1"><a href="javascript:' + this.name + '.toPage(1);">[1]</a></span>';
			if (this.page >= 5) strHtml += '<span>...</span>';
			if (this.pageCount > this.page + 2) {
				var endPage = this.page + 2;
			} else {
				var endPage = this.pageCount;
			}
			for (var i = this.page - 2; i <= endPage; i++) {
				if (i > 0) {
					if (i == this.page) {
						strHtml += '<span title="Page ' + i + '" style="color:red">[' + i + ']</span>';
					} else {
						if (i != 1 && i != this.pageCount) {
							strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
						}
					}
				}
			}
			if (this.page + 3 < this.pageCount) strHtml += '<span>...</span>';
			if (this.page != this.pageCount) strHtml += '<span title="Page ' + this.pageCount + '"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">[' + this.pageCount + ']</a></span>';
			if (nextPage > this.pageCount) {
				strHtml += '&nbsp;<span title="Next Page">下一页</span>';
				strHtml += '&nbsp;<span title="Last Page">尾页</span>';
			} else {
				strHtml += '&nbsp;<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">下一页</a></span>';
				strHtml += '&nbsp;<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">尾页</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="page"></div>');
	document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = this.createHtml(mode);
	
}
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;
}

 

没有看明白

试试就可以出来效果了

娘啊，叫人怎么看？又是js封装，最讨厌js了

求效果图啊

写了个demo看了下

楼主写的非常好，我JavaScript很差提不了什么有意义的建议。存支持

稍后放出效果图

楼主写的不错啊，js封装的很好。收藏了

使用方法很简单

把楼主的代码全部复制下来，然后新建一个文件.js复制进去

 

<html>
	<head>
		<title>showPages.html</title>

		<meta http-equiv="content-type" content="text/html; charset=UTF-8">
		<script type="text/javascript" src="js/showPages.js"></script>

	</head>

	<body>

		<script type="text/javascript">
			var pg = new showPages('pg');
			pg.pageCount = 12; //定义总页数(必要) 
			pg.argName = 'p'; //定义参数名(可选,缺省为page) 
			pg.printHtml(); //显示页数
		</script>

	</body>
</html>

 

学习了。。。lz如果加上css就更好了

很不错，拿来消化消化，感谢LZ