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- 本篇文章具体介绍如下
真正使用的时候可能并不需要这么完善的功能。咱们就写个简陋点的东西，够自己用就行了。
而且以前有朋友提出我发的东西都是一些娱乐货，没有什么实用性，这次就当是个开始，抛个砖，以后时不时发个带一些实用性的东东。
<!-- 以下demo没有什么出彩的地方，仅供有需要的朋友看看 -->
<!DOCTYPE hTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>DatePicker</title> <meta name="author" content="hongru.chen" /> <style> .date-picker-wp { display: none; position: absolute; background: #f1f1f1; left: 40px; top: 40px; border-top: 4px solid #3879d9; } .date-picker-wp table { border: 1px solid #ddd; } .date-picker-wp td { background: #fafafa; width: 22px; height: 18px; border: 1px solid #ccc; font-size: 12px; text-align: center; } .date-picker-wp td.noborder { border: none; background: none; } .date-picker-wp td a { color: #1c93c4; text-decoration: none; } .strong {font-weight: bold} .hand {cursor: pointer; color: #3879d9} </style> </head> <body> <input type="text" id="date-input" /> <input type="text" id="demo2" /><br> <select><option>岑安</option></select> </body> </html>
以下是源码：
具体代码如下:
var DatePicker = function () {
var $ = function (i) {return document.getElementById(i)},
addEvent = function (o, e, f) {o.addEventListener ? o.addEventListener(e, f, false) : o.attachEvent('on' e, function(){f.call(o)})},
getPos = function (el) {
for (var pos = {x:0, y:0}; el; el = el.offsetParent) {
pos.x = el.offsetLeft;
pos.y = el.offsetTop;
}
return pos;
}
var init = function (n, config) {
window[n] = this;
Date.prototype._fd = function () {var d = new Date(this); d.setDate(1); return d.getDay()};
Date.prototype._fc = function () {var d1 = new Date(this), d2 = new Date(this); d1.setDate(1); d2.setDate(1); d2.setMonth(d2.getMonth() 1); return (d2-d1)/86400000;};
this.n = n;
this.config = config;
this.D = new Date;
this.el = $(config.inputId);
this.el.title = this.n 'DatePicker';
this.update();
this.bind();
}
init.prototype = {
update : function (y, m) {
var con = [], week = ['Su','Mo','Tu','We','Th','Fr','Sa'], D = this.D, _this = this;
fn = function (a, b) {return '<td title="' _this.n 'DatePicker" class="noborder hand" onclick="' _this.n '.update(' a ')">' b '</td>'},
_html = '<table cellpadding=0 cellspacing=2>';
y && D.setYear(D.getFullYear() y);
m && D.setMonth(D.getMonth() m);
var year = D.getFullYear(), month = D.getMonth() 1, date = D.getDate();
for (var i=0; i<week.length; i ) con.push('<td title="' this.n 'DatePicker" class="noborder">' week[i] '</td>');
for (var i=0; i<D._fd(); i ) con.push('<td title="' this.n 'DatePicker" class="noborder"> </td>');
for (var i=0; i<D._fc(); i ) con.push('<td class="hand" onclick="' this.n '.fillInput(' year ', ' month ', ' (i 1) ')">' (i 1) '</td>');
var toend = con.length%7;
if (toend != 0) for (var i=0; i<7-toend; i ) con.push('<td class="noborder"> </td>');
_html = '<tr>' fn("-1, null", "<<") fn("null, -1", "<") '<td title="' this.n 'DatePicker" colspan=3 class="strong">' year '/' month '/' date '</td>' fn("null, 1", ">") fn("1, null", ">>") '</tr>';
for (var i=0; i<con.length; i ) _html = (i==0 ? '<tr>' : i%7==0 ? '</tr><tr>' : '') con[i] (i == con.length-1 ? '</tr>' : '');
!!this.box ? this.box.innerhTML = _html : this.createBox(_html);
},
fillInput : function (y, m, d) {
var s = this.config.seprator || '/';
this.el.value = y s m s d;
this.box.style.display = 'none';
},
show : function () {
var s = this.box.style, is = this.mask.style;
s['left'] = is['left'] = getPos(this.el).x 'px';
s['top'] = is['top'] = getPos(this.el).y this.el.offsetheight 'px';
s['display'] = is['display'] = 'block';
is['width'] = this.box.offsetWidth - 2 'px';
is['height'] = this.box.offsetheight - 2 'px';
},
hide : function () {
this.box.style.display = 'none';
this.mask.style.display = 'none';
},
bind : function () {
var _this = this;
addEvent(document, 'click', function (e) {
e = e || window.event;
var t = e.target || e.srcElement;
if (t.title != _this.n 'DatePicker') {_this.hide()} else {_this.show()}
})
},
createBox : function (html) {
var box = this.box = document.createElement('div'), mask = this.mask = document.createElement('iframe');
box.className = this.config.className || 'datepicker';
mask.src = 'javascript:false';
mask.frameBorder = 0;
box.style.cssText = 'position:absolute;display:none;z-index:9999';
mask.style.cssText = 'position:absolute;display:none;z-index:9998';
box.title = this.n 'DatePicker';
box.innerhTML = html;
document.body.appendChild(box);
document.body.appendChild(mask);
return box;
}
}
return init;
}();
调用方式：
具体代码如下:
new DatePicker('_DatePicker_demo', {
inputId: 'date-input',
className: 'date-picker-wp',
seprator: '-'
});
第一个参数：实例名，
第二个参数一个对象字面量，包括输入框的id（必须），弹出日历box的className，日期样式的分隔符如‘-'，‘/'，等。后两个可省略，默认值‘datepicker'，‘/'。
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