又一日历输入效果没考虑兼容性，IE通过 - phpStudy

又一日历输入效果没考虑兼容性，IE通过

<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 全选注:如需引入外部Js需刷新才能执行]

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++;
}*/

<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 全选注:如需引入外部Js需刷新才能执行]
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++;
}*/

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