又一日历输入效果没考虑兼容性，IE通过- Javascript - 软晨网（RuanChen.com）

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Javascript 中的又一日历输入效果没考虑兼容性，IE通过

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-12 浏览: 50 ::

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js判断浏览器的比较全的代码项目添加

点击运行可以看到效果:

<script>
onload = function()
{ var panel = new SelectPanel; var rili = new Kalendar; panel.Create(); rili.Create(panel); panel.Apply(document.form1.a); panel.Apply(document.form1.b);
}
</script>
<form name="form1">
<input name="a" readonly>
<input name="b" readonly>
</form>
<script>
/* 日历选择类
this.Width = 0; // 设置日历宽度，为零时不指定宽度。
this.Height = 0; // 设置日历高度，为零时不指定高度。
this.BorderColor = "#1095c6"; // 设置日历边框颜色。
this.BackColor = "white"; // 设置日历背景颜色。
this.CapBack = "#d9ebfe"; // 设置日历深色。
this.Tag = doc.createElement("table"); // 日历DOM节点。
this.Create = function(container) // 将日历绑定到指定对象。
*/
function Kalendar(win)
{ if(!win) win = self; var doc = win.document; var _Kalendar = this; this.Width = 0; this.Height = 0; this.BorderColor = "#1095c6"; this.BackColor = "white"; this.CapBack = "#d9ebfe"; this.Tag = doc.createElement("table"); this.Tag.style.cursor = "default"; this.Create = function(container) { if(!container) container = doc.body; this.Parent = container; this.Tag.style.borderCollapse = "collapse"; this.Tag.border = 1; this.Tag.borderColor = this.BorderColor; this.Tag.width = this.Width ? this.Width : ""; this.Tag.height = this.Height ? this.Height : ""; this.Tag.rows[0].cells[0].bgColor = this.CapBack; (container.Tag || container).appendChild(this.Tag); BuildDateFace(new Date(sltNian.value, sltYue.value)); } var today = new Date; var tr = this.Tag.insertRow(); tr.insertCell(); var sltNian = doc.createElement("select"); sltNian.options.add(new Option(today.getFullYear() + "年", today.getFullYear())); InitYearSelect(); function InitYearSelect() { while(sltNian.selectedIndex < 10) sltNian.options.add(new Option(sltNian.options[0].value - 1 + "年", sltNian.options[0].value - 1), 0); while(sltNian.options.length < sltNian.selectedIndex + 11) sltNian.options.add(new Option(sltNian.lastChild.value - 0 + 1 + "年", sltNian.lastChild.value - 0 + 1)); } var sltYue = sltNian.cloneNode(); for(var i = 0; i < 12;) { var opt = new Option(++i + "月", i-1); sltYue.options.add(opt); } sltYue.onchange = function() { BuildDateFace(new Date(sltNian.value, sltYue.value)); } sltNian.onchange = function() { sltYue.onchange(); InitYearSelect(); } sltYue.value = today.getMonth(); sltNian.value = today.getFullYear(); tr.cells[0].appendChild(sltNian); tr.cells[0].appendChild(sltYue); tr.cells[0].colSpan = 7; tr.cells[0].align = "center"; var tBody = this.Tag.tBodies[0]; tBody.insertRow(); for(var i = 0; i < 7; i++) { var td = tBody.rows[1].insertCell(); td.align = "center"; td.appendChild(doc.createTextNode("日一二三四五六".charAt(i))); } tBody.rows[1].cells[0].style.color = "red"; tBody.rows[1].cells[6].style.color = "green"; for(var i = 0; i < 6; i++) { var row = tBody.rows[1].cloneNode(true); tBody.appendChild(row); IRow.apply(row); } tBody.rows[7].deleteCell(); tBody.rows[7].cells[5].colSpan = 2; tBody.rows[7].cells[5].lastChild.data = "清空"; tBody.rows[1].style.fontWeight = "bold"; function IRow() { for(var i = 0; i < this.cells.length; i++) { this.cells[i].onmouseover = function() { if(!IsToday(this.title)) this.bgColor = _Kalendar.CapBack; } this.cells[i].onmouseout = function() { if(!IsToday(this.title)) this.bgColor = ""; } this.cells[i].onclick = function() { _Kalendar.Parent.Owner.value = this.title; _Kalendar.Parent.Tag.style.display = "none"; } } } function IsToday(date) { date = date.split("-"); var year = parseInt(date[0]); var month = parseInt(date[1], 10) - 1; date = parseInt(date[2], 10); return today.getFullYear() == year && today.getMonth() == month && today.getDate() == date; } function BuildDateFace(date) { date.setDate(1); var year = date.getFullYear(); var month = date.getMonth(); var offset = date.getDay(); var maxDate = GetDates(year, month); for(var i = 0; i < maxDate; i++) { var td = _Kalendar.Tag.cells[i + 8 + offset]; td.lastChild.data = i + 1; td.title = [year, (month < 9 ? "0" : "") + (month + 1), (i < 9 ? "0" : "") + (i + 1)].join("-"); td.bgColor = (IsToday(td.title)) ? _Kalendar.CapBack : ""; td.disabled = false; } for(var i = 8 + offset + maxDate; i < _Kalendar.Tag.cells.length - 1; i++) { var td = _Kalendar.Tag.cells[i]; td.title = ""; td.lastChild.data = i - 7 - offset - maxDate; td.disabled = true; } lastMonth = GetDates(year, month - 1); while(offset) { var td = _Kalendar.Tag.cells[8 + (--offset)]; td.title = ""; td.lastChild.data = lastMonth - date.getDay() + offset + 1; td.disabled = true; } } function GetDates(year, month) { if(month < 0) { month = 11; year--; } if(month == 12) { month = 0; year++; } var date = new Date(year, month, 31); return 31 - date.getDate() || 31; }
}
/* 选择面板类
this.Tag = doc.createElement("div"); // 面板HTML标签
this.Owner = null; // 面板对应的输入框。
this.Width = 0; // 宽度，为0时自适应
this.Height = 0; // 面板高度，为0时自适应
this.BorderColor = "#1095c6"; // 边框颜色
this.BgColor = "white"; // 面板背景颜色
this.Create(container) // 将面板创建到container内
this.Apply(target) // 将面板应用到目标控件。
*/
function SelectPanel(win)
{ if(!win) win = self; var doc = win.document; var _SelectPannel = this; this.Owner = null; this.Tag = doc.createElement("div"); this.Width = 0; this.Height = 0; this.BorderColor = "#1095c6"; this.BgColor = "white"; IMouseEvent.apply(this.Tag); if(!win._PannelList) win._PannelList = [this]; else win._PannelList.push(this); if(!doc.onmousedown) doc.onmousedown = function() { for(var i in win._PannelList) { if(!win._PannelList[i].AllowShow && win._PannelList[i].Tag.style.display != "none" && doc.activeElement.tagName != "SELECT") win._PannelList[i].Tag.style.display = "none"; } } this.Create = function(container) { var style = this.Tag.style; if(this.Width) style.width = this.Width; if(this.Height) style.height = this.Height; style.backgroundColor = this.BgColor; style.border = "1px solid " + this.BorderColor; style.position = "absolute"; style.left = "0px"; style.top = "0px"; style.overflow = "auto"; style.display = "none"; (container || doc.body).appendChild(this.Tag); } this.Apply = function(target) { target.onclick = function() { _SelectPannel.Owner = this; IMouseEvent.apply(target); var x = target.offsetLeft; var y = target.offsetTop + target.offsetHeight + 1; var sender = target; while(sender.offsetParent) { sender = sender.offsetParent; x += sender.offsetLeft; y += sender.offsetTop; } _SelectPannel.Tag.style.left = x + "px"; _SelectPannel.Tag.style.top = y + "px"; _SelectPannel.Tag.style.display = "block"; } } function IMouseEvent() { this.onmouseenter = function() { _SelectPannel.AllowShow = true; } this.onmouseleave = function() { _SelectPannel.AllowShow = false; } }
}
</script>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

做得比较急，所以没考虑兼容性。
通过两个类实现，一个是面板类，一个是日历类。
由于我开发时所有公共js都是在顶级窗口一次加载的，所以在子窗口创建对象时需要把当前窗口对象传进去，例如： var panel = new parent.parent.SelectPanel(self);如果没传self参数，默认就是加载js的窗口。
marcian 在网上找的那个公历算法有点复杂，呵呵。我获取当前月最大天数，以及当前月第一天是星期几是直接通过JS自带的Date函数来实现的。

复制代码代码如下:

// 获取当月最大天数 
//asfman提供更简单的方式：return (new Date(y, m+1, 0)).getDate() 
function GetDates(year, month) 
{ 
 var date = new Date(year, month, 31); 
 return 31 - date.getDate() || 31; 
} 
// 获取当月第一天是星期几 
function GetFirstDay(year, month) 
{ 
 return (new Date(year, month, 1)).getDay(); 
} 

/* 下面这部分可以不要，因为即使出现new Date(2007, -1, 31)，这种现象，Date会自动转换成Date(2006, 12, 31)
if(month < 0)
{
month = 11;
year--;
}
if(month == 12)
{
month = 0;
year++;
}*/

js判断浏览器的比较全的代码项目添加

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