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Ver.4 実行月の日曜始まり5週カレンダーを出力するJS / カレンダープロトタイプ化、クリックイベント
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| <!DOCTYPE html> | |
| <script src="Calendar.js"></script> | |
| <script> | |
| var today = new Date(); | |
| var calendar = new Calendar(today.getFullYear(), today.getMonth()+1, today.getDate()/7); | |
| calendar.addEventListener('click', function(date) { console.log(date); }); | |
| window.onload = function() { | |
| var dom = calendar.createTableDOM(); | |
| document.body.appendChild(dom); | |
| }; | |
| </script> |
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| var Calendar = function(year, month, baseWeek, amplitude) { | |
| if (amplitude == undefined) amplitude = 2; | |
| var weeks = []; | |
| var weekCount = amplitude*2 +1; | |
| for (var i=0; i<weekCount; i++) { | |
| var week = []; | |
| var weekI = baseWeek +i-amplitude; | |
| var weekTop = new Date(year, month-1, 7*(weekI-1)+1); | |
| for (var j=0; j<7; j++) { | |
| week[j] = new Date(weekTop.getFullYear(), weekTop.getMonth(), weekTop.getDate() +j); | |
| } | |
| weeks[i] = week; | |
| } | |
| this.weeks = weeks; | |
| this.amplitude = amplitude; | |
| this.weekCount = weekCount; | |
| }; | |
| Calendar.prototype.addEventListener = function(name, listener) { | |
| if (this.eventListeners == undefined) | |
| this.eventListeners = {}; | |
| if (this.eventListeners[name] == undefined) | |
| this.eventListeners[name] = []; | |
| this.eventListeners[name][this.eventListeners[name].length] = listener; | |
| }; | |
| Calendar.prototype.triggerEvent = function(name, obj) { | |
| if (this.eventListeners != undefined && this.eventListeners[name] != undefined) { | |
| for (var i=0, len=this.eventListeners[name].length; i<len; i++) { | |
| this.eventListeners[name][i](obj); | |
| } | |
| } | |
| }; | |
| Calendar.prototype.createTableDOM = function() { | |
| var table = document.createElement('table'); | |
| for (var i=0; i<this.weekCount; i++) { | |
| var weektr = document.createElement('tr'); | |
| for (var j=0; j<7; j++) { | |
| var datetd = document.createElement('td'); | |
| var date = this.weeks[i][j]; | |
| var mn = date.getMonth() +1; | |
| if (mn < 10) mn = '0' + mn; | |
| var dt = date.getDate(); | |
| if (dt < 10) dt = '0' + dt; | |
| datetd.dataset.date = date.getFullYear() + '-' + mn + '-' + dt; | |
| datetd.innerText = date.getDate(); | |
| (function() { | |
| var cl = calendar; | |
| var cache = date; | |
| datetd.addEventListener('click', function() { cl.triggerEvent('click', cache); }); | |
| })(); | |
| weektr.appendChild(datetd); | |
| } | |
| table.appendChild(weektr); | |
| } | |
| return table; | |
| }; |
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