JS日历面板_懒之才

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JS日历面板

 2018-08-16  534  收藏  0 赞一个  0 真差劲  0 去评论

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>JavaScript日历面板</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<style type="text/css">
body {
	font-size:12px;
	margin:0;
}
img {
	border:0px;
}

/*统一设定ul ,li样式*/
ul , li {
	margin:0;
	padding:0;
	list-style:none;
}

li {
	line-height:21px;
}

/*单元格视图样式*/
#content {
	width:750px;
	margin:0 auto;
	border-left: 1px solid #CCDDEE;
}
#content .weekTitle {
	color:#53504D;
	background:#F1FFE3;
	height:20px;
	border-bottom: 1px solid #B8E78B;
}
#content .weekTitle td {
	text-align:center;
}
#content #render {
	color:#6A6A6B;
}
#content #render td {
	height:90px;
	vertical-align: top;
	border-right: 1px solid #CCDDEE;
	border-bottom: 1px solid #CCDDEE;
}
.dayStyle {
	color:#6A6A6B;
	padding-right:2px;
	padding-top:2px;
	height:15px;
	background:#E8EEF7;
	text-align:right;
	display:block;
}
.currDay {
	background:#FFFFCC;
}
.disableText {
	color:#BABDC4;
}
</style>

<script type="text/javascript">
//<![CDATA[

/*
* * 根据class属性返回对象
* * msn:danxinju@hotmail.com
* * author:淡新举
*/	
var getElementsByClassName = function(className){
	var alls = document.getElementsByTagName("*");
	var rets = new Array();

	for (var i=0;i<alls.length ; i++)
	{
		if (alls[i].className == className)
		{
			rets.push(alls[i]);
		}
	}

	return rets;
};

var Calendar = {
	model:function(){} ,
	controller:function(){} ,
	view:function(){}
};	

//视图层
Calendar.view = function(){
	this.currDate = new Date();
	this.tds = null;
	this.days = null;

	this.backNode = null;
	this.disableDays = new Array();
};

//根据年份返回每月天数
Calendar.view.getMonthDays = function(year){
	var feb = (year % 4 == 0)? 29:28; 
	return new Array(31, feb , 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
};

//初始化
Calendar.view.prototype.init = function(){
	this.setCurrMonth(new Date().getFullYear() ,new Date().getMonth());
	this.addEventForTd();
};

//为单元格注册事件
Calendar.view.prototype.addEventForTd = function(){
	for (var i=0;i<this.tds.length ;i++ )
	{
		this.tds[i].onclick = function(){
			var arr = this.getAttribute("dateValue").split("-");
			//alert(arr)
			alert(arr[0] +"-"+ (parseInt(arr[1])+1) +"-"+ arr[2]);
		};
	}
};

//设定当前版面
Calendar.view.prototype.setCurrMonth = function(y ,m){

	this.currDate.setFullYear(y);
	this.currDate.setMonth(m);
	this.currDate.setDate(1);
	
	this.loadDaysByMonth(y ,m);
};

//标示当前天
Calendar.view.prototype.markCurrDate = function(bDay ,eDay){
	var temp = new Date();
	if (this.currDate.getFullYear() == temp.getFullYear() 
						&& this.currDate.getMonth() == temp.getMonth())
	{
		for (var i=bDay;i<eDay ;i++ )
		{
			if (this.tds[i].getAttribute("dateValue").split("-")[2] == temp.getDate())
			{
				if (this.backNode)
				{
					this.backNode.className = "";
				}
				this.tds[i].className = "currDay";
				this.backNode = this.tds[i];
				return false;
			}
		}
	}
};

//复位版面状态
Calendar.view.prototype.reInState = function(){
	this.tds[35].parentNode.style.display = "none";
	if (this.backNode)
	{
		this.backNode.className = "";
	}
	for (var i=0;i<this.disableDays.length ;i++ )
	{
		this.disableDays[i].className = "dayStyle";
	}
	this.disableDays.length = 0;
};

//根据年月加载当前视图
Calendar.view.prototype.loadDaysByMonth = function(y ,m){
	y = parseInt(y) ,m = parseInt(m);
	this.reInState();	//复位版面状态

	//参数定位
	var beginDay = this.currDate.getDay();
	var _m = (m == 0)?11 : (m-1);
	var m_ = (m == 11)?0 : (m+1);
	var _y = (m == 0)?(y-1) : y;
	var y_ = (m == 11)?(y+1) : y;
	
	var prevMonthDays = Calendar.view.getMonthDays(_y)[_m];
	var currMonthDays = Calendar.view.getMonthDays(y)[m];
	var prevFlag = prevMonthDays - beginDay + 1 ,currFlag = 1 ,nextFlag = 1;

	//加载上月信息
	for (var i=0;i<beginDay ;i++ )
	{
		this.tds[i].setAttribute("dateValue" ,_y +"-"+ _m +"-"+ prevFlag);
		this.days[i].innerHTML = prevFlag;
		this.days[i].className = "dayStyle disableText";
		this.disableDays.push(this.days[i]);
		prevFlag++;
	}
	
	//加载当月信息
	for (var i=beginDay;i<currMonthDays+beginDay ;i++ )
	{
		this.tds[i].setAttribute("dateValue" ,y +"-"+ m +"-"+ currFlag);
		this.days[i].innerHTML = currFlag;
		currFlag++;
	}
	
	//加载下月信息
	for (var i=currMonthDays+beginDay;i<this.days.length ;i++ )
	{
		this.tds[i].setAttribute("dateValue" ,y_ +"-"+ m_ +"-"+ nextFlag);
		this.days[i].innerHTML = nextFlag;
		this.days[i].className = "dayStyle disableText";
		this.disableDays.push(this.days[i]);
		nextFlag++;
	}
	
	//若当月数据显示到第7行，那么显示它
	if (this.tds[35].getAttribute("dateValue"))
	{
		if (this.tds[35].getAttribute("dateValue").split("-")[2] > 20)
		{
			this.tds[35].parentNode.style.display = "";
		}
	}

	//标示当前天
	this.markCurrDate(beginDay ,currMonthDays+beginDay);
};

window.onload = function(){
	view = new Calendar.view();
	view.tds = document.getElementById("render").getElementsByTagName("td");
	view.days = getElementsByClassName("dayStyle");
	view.init();
	
	
	document.getElementById("testButton").onclick = function(){
		view.setCurrMonth(document.getElementById("testYear").value
							,document.getElementById("testMonth").value);
	};
};

//]]>
</script>
</head>
<body>
<div id="content">
	<select id="testYear">
		<option value="2005">2005</option>
		<option value="2006">2006</option>
		<option value="2007">2007</option>
		<option value="2008" selected="selected">2008</option>
		<option value="2009">2009</option>
		<option value="2010">2010</option>
		<option value="2011">2011</option>
		<option value="2012">2012</option>
		<option value="2013">2013</option>
		<option value="2014">2014</option>
		<option value="2015">2015</option>
		<option value="2016">2016</option>
		<option value="2017">2017</option>
		<option value="2018">2018</option>
		<option value="2019">2019</option>
		<option value="2020">2020</option>
	</select>年
	<select id="testMonth">
		<option value="0">1</option>
		<option value="1">2</option>
		<option value="2">3</option>
		<option value="3">4</option>
		<option value="4">5</option>
		<option value="5">6</option>
		<option value="6">7</option>
		<option value="7">8</option>
		<option value="8">9</option>
		<option value="9" selected="selected">10</option>
		<option value="10">11</option>
		<option value="11">12</option>
	</select>月
	<input type="button" value="设定日期" id="testButton" />
	<table width="100%" cellpadding="0" cellspacing="0" class="weekTitle">
		<tr>
			<td>日</td>
			<td>一</td>
			<td>二</td>
			<td>三</td>
			<td>四</td>
			<td>五</td>
			<td>六</td>
		</tr>
	</table>
	<table width="100%" cellpadding="0" cellspacing="0" id="render">
		<tr>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
		</tr>
		<tr>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
		</tr>
		<tr>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
		</tr>
		<tr>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
		</tr>
		<tr>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
		</tr>
		<tr style="display:none;">
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
			<td><span class="dayStyle"></span><div id="pros"></div></td>
		</tr>
	</table>
</div>
</body>
</html>

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预览图片

基于JavaScript的日历面板，可以自定义日期时间，月份、年份等。作者：淡新举。代码中可以学到一些实用的小知识，比如如何根据年份返回每月天数、如何为为单元格注册事件、如何设定当前版面、如何根据年月加载当前视图等。

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