JQuery日历控件

日历控件最后一弹——JQuery实现，换汤不换药。原理一模一样，换了种实现工具。关于日历的终于写完了，接下来研究研究nodejs。嗯，近期就这点事了。

同样还是将input的id设置成calendar就可以使用这个控件了。

<input id="calendar" type="text" />

当然别忘了引用jquery库，必须在引用这个控件之前引用jquery库。

calendar_jquery.js源代码：

// JavaScript Document
$(document).ready(function(e) {

var days = new Array("日","一","二","三","四","五","六");//星期
var today = new Date();//当天日期，备用
var month_big = new Array("1","3","5","7","8","10","12"); //包含所有大月的数组
var month_small = new Array("4","6","9","11"); //包含所有小月的数组
var separator = "-";//间隔符

var cal_width = ($("#calendar").width() < 150)?150:$("#calendar").width();
var cal_height = $("#calendar").height();
var cal_X = $("#calendar").offset().left;
var cal_Y = $("#calendar").offset().top;
var pane_height = cal_width/7 - 1;

$("#calendar").attr("readOnly","readOnly");
$("#calendar").css("cursor","pointer");
$("#calendar").bind("click",showCalendar);
$("#calendar").bind("focusout",hideCalendar);

function hideCalendar(){
if($("#cal_body").length > 0){
$("#cal_body").remove();
}
}

function showCalendar(){
if($("#cal_body").length > 0){
$("#cal_body").remove();
}
else{
var cal_body = $("<div></div>");
cal_body.attr("id","cal_body");
cal_body.css("position","absolute");
cal_body.css("z-index",10);
cal_body.offset({top:cal_Y + cal_height + 5,left:cal_X});
cal_body.width(cal_width + 1);
cal_body.height("auto");//auto
cal_body.css("overflow","hidden");
cal_body.css("border","solid 1px #CCC");
cal_body.mouseenter(function(e) {
$("#calendar").unbind("focusout");
});
cal_body.mouseleave(function(e) {
$("#calendar").focus();
$("#calendar").bind("focusout",hideCalendar);
});
$("#calendar").parent().append(cal_body);

var line1 = $("<div></div>");
line1.width("100%");
line1.height(pane_height);
line1.css("background-color","#0FF");

var btn1 = $("<div></div>");
btn1.width(cal_width/3 - 3);
btn1.height(pane_height);
btn1.css("line-height",pane_height + "px");
btn1.css("text-align","center");
btn1.text("<");
btn1.css("float","left");
btn1.css("cursor","pointer");
btn1.click(function(e) {
if(isValidated()){
var old_year = parseInt($("#input_year").val());
if(old_year > 1960){
var year = old_year - 1;
var month = parseInt($("#input_month").val());
var val = year + separator + month + separator + 1;
init(val);
}
}
});
line1.append(btn1);

var input_year = $("<input />");
input_year.attr("id","input_year");
input_year.width(cal_width/3);
input_year.height("70%");
input_year.css("float","left");
input_year.css("text-align","center");
input_year.bind("change",changed);
line1.append(input_year);

var btn2 = $("<div></div>");
btn2.width(cal_width/3 - 3);
btn2.height(pane_height);
btn2.css("line-height",pane_height + "px");
btn2.css("text-align","center");
btn2.text(">");
btn2.css("float","left");
btn2.css("cursor","pointer");
btn2.click(function(e) {
if(isValidated()){
var old_year = parseInt($("#input_year").val());
if(old_year < 2050){
var year = old_year + 1;
var month = parseInt($("#input_month").val());
var val = year + separator + month + separator + 1;
init(val);
}
}
});
line1.append(btn2);

var line2 = $("<div></div>");
line2.width("100%");
line2.height(pane_height);
line2.css("background-color","#0FF");

var btn3 = $("<div></div>");
btn3.width(cal_width/3 - 3);
btn3.height(pane_height);
btn3.css("line-height",pane_height + "px");
btn3.css("text-align","center");
btn3.text("<");
btn3.css("float","left");
btn3.css("cursor","pointer");
btn3.click(function(e) {
if(isValidated()){
var old_month = parseInt($("#input_month").val());
if(old_month > 1){
var year = parseInt($("#input_year").val());
var month = old_month - 1;
var val = year + separator + month + separator + 1;
init(val);
}
else {
var year = parseInt($("#input_year").val()) - 1;
var month = 12;
var val = year + separator + month + separator + 1;
init(val);
}
}
});
line2.append(btn3);

var input_month = $("<input />");
input_month.attr("id","input_month");
input_month.width(cal_width/3);
input_month.height("70%");
input_month.css("float","left");
input_month.css("text-align","center");
input_month.bind("change",changed);
line2.append(input_month);

var btn4 = $("<div></div>");
btn4.width(cal_width/3 - 3);
btn4.height(pane_height);
btn4.css("line-height",pane_height + "px");
btn4.css("text-align","center");
btn4.text(">");
btn4.css("float","left");
btn4.css("cursor","pointer");
btn4.click(function(e) {
if(isValidated()){
var old_month = parseInt($("#input_month").val());
if(old_month < 12){
var year = parseInt($("#input_year").val());
var month = parseInt($("#input_month").val()) + 1;
var val = year + separator + month + separator + 1;
init(val);
}
else {
var year = parseInt($("#input_year").val()) + 1;
var month = 1;
var val = year + separator + month + separator + 1;
init(val);
}
}
});
line2.append(btn4);

cal_body.append(line1);
cal_body.append(line2);

for(var i=0;i<7;i++){
var pane = $("<div></div>");
pane.addClass("pane");
pane.width(pane_height);
pane.height(pane_height);
pane.css("line-height",pane_height + "px");
pane.css("float","left");
pane.css("text-align","center");
pane.text(days[i]);
cal_body.append(pane);
}

init($("#calendar").val());
}
}

function init(val){
clearPane();

var temp_date;
var year;
var month;
var date;

if(val == ""){
temp_date = today;
$("#calendar").val(today.toFormatString(separator));
}
else{
year = val.year();
month = val.month(separator);
date = val.date(separator);
temp_date = new Date(year,month,date);
}

year = temp_date.getFullYear();
month = temp_date.getMonth() + 1;
date = temp_date.getDate();
temp_date.setDate(1);

var start = temp_date.getDay() + 7;
var end;

if(array_contain(month_big, month)){
end = start + 31;
}
else if(array_contain(month_small, month)){
end = start + 30;
}
else{
if(isLeapYear(year)){
end = start + 29;
}
else{
end = start + 28;
}
}

for(var i = 7; i < start; i++){

var pane = $("<div></div>");
pane.addClass("pane");
pane.width(pane_height);
pane.height(pane_height);
pane.css("line-height",pane_height + "px");
pane.css("float","left");
pane.css("text-align","center");
$("#cal_body").append(pane);
}

for(var i = start; i < end; i++){
var pane = $("<div></div>");
pane.addClass("pane");
pane.width(pane_height);
pane.height(pane_height);
pane.css("line-height",pane_height + "px");
pane.css("float","left");
pane.css("text-align","center");
pane.text(i - start + 1);
pane.css("cursor","pointer");
pane.mouseover(function(e) {
$(this).css("background-color","#0FF");
});
if(date == (i - start + 1))
pane.css("background-color","#0FF");
else{
pane.mouseleave(function(e) {
$(this).css("background-color","");
});
}
pane.click(function(){
$("#calendar").val(year + separator + month + separator + $(this).text());
$("#cal_body").remove();
});
$("#cal_body").append(pane);

$("#input_year").val(year);
$("#input_month").val(month);
}
}

//格式化输出
Date.prototype.toFormatString  = function(separator){
var result = this.getFullYear() + separator + (this.getMonth() + 1) + separator + this.getDate();
return result;
};

//从格式化字符串中获取年份
String.prototype.year = function(){
var str = this.substring(0,4);
return str;
};

//从格式化字符串中获取月份
String.prototype.month = function(separator){
var start = this.indexOf(separator) + 1;
var end = this.lastIndexOf(separator);
return parseInt(this.substring(start, end)) - 1;
};

//从格式化字符串中获取日期
String.prototype.date = function(separator){
var start = this.lastIndexOf(separator) + 1;
return this.substring(start);
};

//判断数组array中是否包含元素obj的函数，包含则返回true，不包含则返回false
function array_contain(array, obj){
for (var i = 0; i < array.length; i++){
if (array[i] == obj)
return true;
}
return false;
}

//判断年份year是否为闰年，是闰年则返回true，否则返回false
function isLeapYear(year){
var a = year % 4;
var b = year % 100;
var c = year % 400;
if( ( (a == 0) && (b != 0) ) || (c == 0) ){
return true;
}
return false;
}

//清除方格
function clearPane(){
var limit = $(".pane").length;
for(var i=7; i < limit; i++){
$(".pane").eq(7).remove();
}
}

//判断输入是否合法
function isValidated(){
var year = $("#input_year").val();
var month = $("#input_month").val();
if(isNaN(year) || isNaN(month)){
alert("请输入正确的年份/月份");
return false;
}
else{
if(year%1 != 0 || month%1 != 0){
alert("请输入正确的年份/月份");
return false;
}
else{
year = parseInt(year);
if(year < 1960 || year > 2050){
alert("请输入1960~2050之间的年份！");
return false;
}
else if(month < 1 || month >12){
alert("请输入正确的月份！");
return false;
}
else{
return true;
}
}
}
}

//年份月份发生变化时处理函数
function changed(){
if(isValidated()){
var year = $("#input_year").val();
var month = $("#input_month").val();
var val = year + separator + month + separator + 1;
init(val);
}
}
});