/*
showPages 1.0
全js
zjc
*/
function showPages(name,obj,sfunction) { //初始化属性
this.obj = obj;
this.sfunction = sfunction;
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
}
showPages.prototype.getPage = function(p){ //丛url获得当前页数,如果变量重复只获取最后一个
this.page = p;
}
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 += '页: ' + this.page + ' / ' + this.pageCount + ' ';
strHtml += '';
if (prevPage < 1) {
strHtml += '
';
strHtml += '
';
} else {
strHtml += ' ';
strHtml += ' ';
}
if (this.page != 1) strHtml += '[1]';
if (this.page >= 5) strHtml += '...';
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 += ' [' + i + ']';
} else {
if (i != 1 && i != this.pageCount) {
strHtml += ' [' + i + ']';
}
}
}
}
if (this.page + 3 < this.pageCount) strHtml += '...';
if (this.page != this.pageCount) strHtml += ' [' + this.pageCount + ']';
if (nextPage > this.pageCount) {
strHtml += ' 
';
strHtml += ' 
';
} else {
strHtml += ' ';
strHtml += ' ';
}
strHtml += '
';
return strHtml;
}
showPages.prototype.toPage = function(page,obj){ //页面跳转
eval(this.sfunction+'('+page+')');
this.getPage(page);
this.checkPages();
document.getElementById(obj).innerHTML = this.createHtml();
}
showPages.prototype.printHtml = function(){ //显示html代码
this.getPage(1);
this.checkPages();
document.getElementById(this.obj).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;
}