// JavaScript Document
/***************************
*JCalendar日历控件
*@author brull
*@email [email]brull@163.com[/email]
*@date 2007-4-16
***************************/
/*
*@param year 年份
*@param month 月份
*@param date 日期
*/
/*如果参数不足三个那么就初始化为当天日期*/
function JCalendar(year, month, date) {
var _date = arguments.length == 0 ? new Date() : new Date(year, month - 1, date);
//实例变量
this.year = _date.getFullYear();
this.month = _date.getMonth() + 1;
this.fday = new Date(this.year, this.month - 1, 1).getDay(); //每月第一天的前一天星期数
this.dayNum = new Date(this.year, this.month, 0).getDate(); //每月的天数
//成员变量，当前年月日
JCalendar.cur_year = this.year;
JCalendar.cur_month = this.month;
JCalendar.cur_date = _date.getDate();
}
JCalendar.prototype.show = function() {
var date = new Array(this.fday > 0 ? this.fday : 0); //预先定义一段空数组，对应日历里第一周空的位置
var html_str = new Array();
var date_index = 0;
var weekDay = ["日", "一", "二", "三", "四", "五", "六"];
for (var j = 1; j <= this.dayNum; j++) {//初始化date数组
date.push(j);
}
html_str.push("");
html_str.push("<" + this.year + "年" + this.month + "月>");
html_str.push("");
for (var i = 0; i < 7; i++) {//填充日历头
html_str.push("| " + weekDay[i] + " | ");
}
html_str.push("
");
html_str.push("");
for (var i = 0; i < 6; i++) {//填充日期
html_str.push("");
for (var j = 0; j < 7; j++) {
tmp = date[date_index++];
tmp = tmp ? tmp : "";
if (JCalendar.cur_date == tmp)
html_str.push("" + JCalendar.cur_date + " | ");
else if (tmp == "")
html_str.push(" | ");
else
html_str.push("" + tmp + " | ");
}
html_str.push("
");
}
html_str.push("
");
return html_str.join("");
}
//静态方法
JCalendar.update = function(_month) {
var date = new Date(JCalendar.cur_year, JCalendar.cur_month - 1 + _month, 1);
var fday = date.getDay(); //每月第一天的星期数
var year = date.getFullYear();
var month = date.getMonth() + 1;
var dayNum = new Date(JCalendar.cur_year, JCalendar.cur_month + _month, 0).getDate(); //每月的天数
var tds = document.getElementById("calendar").getElementsByTagName("td");
for (var i = 7; i < tds.length; i++)//清空日历内容
tds[i].innerHTML = "";
document.getElementById("calendar_title").innerHTML = year + "年" + month + "月"; //更新显示年月
//更新当前年月
JCalendar.cur_year = year;
JCalendar.cur_month = month;
for (var j = 1; j <= dayNum; j++) {
if (j == JCalendar.cur_date)
tds[6 + fday + j].innerHTML = "" + JCalendar.cur_date + "
";
else
tds[6 + fday + j].innerHTML = "" + j + "
";
}
}
JCalendar.click = function(obj) {
var tmp = document.getElementById("c_today");
JCalendar.cur_date = parseInt(obj.innerHTML);
obj.parentNode.innerHTML = "" + obj.innerHTML + "
";
JCalendar.onclick(JCalendar.cur_year, JCalendar.cur_month, JCalendar.cur_date);
}