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JavaScript日历实现代码

2020年05月22日  | 萬仟网IT编程  | 我要评论
效果如下:

javascript 代码如下:
 
var Calendar = function(){ 
var self = this; 

self.box = document.createElement("div"); 
self.head = document.createElement("div"); 
self.datePlace; 
self.body = document.createElement("div"); 
self.selectDay; 
self.foot = document.createElement("div"); 
self.timePlace; 

self.dateInfo = { 
"now" : new Date(), 
"getDate" : function(d){ 
d = d || self.dateInfo["now"]; 
return d.getFullYear() + "-" + (d.getMonth()+1) + "-" + d.getDate(); 
}, 
"getTime" : function(d){ 
d = d || self.dateInfo["now"]; 
return d.getHours() + ":" + d.getMinutes() + ":" + d.getSeconds(); 
}, 
"getSelectTime" : function(d){ 
d = d || self.dateInfo["now"]; 
return d.getFullYear() + "-" + (d.getMonth()+1) + "-" + self.dateInfo.selectDay + 
" " + d.getHours() + ":" + d.getMinutes() + ":" + d.getSeconds(); 
}, 
"getDaysCount" : function(d){ 
d = d || self.dateInfo["now"]; 
return (new Date(d.getFullYear(),d.getMonth()+1,0)).getDate(); 
}, 
"weekOfFirstDay" : function(d){ 
d = d || self.dateInfo["now"]; 
return (new Date(d.getFullYear(),d.getMonth(),1)).getDay(); 
} 
}; 
self.dateInfo.selectDay = self.dateInfo["now"].getDate(); 

this.init(); 
}; 
Calendar.prototype = { 
init : function(){ 
this.initDom(); 
}, 
initDom : function(){ 
var self = this; 
//head 
var o = {"preYear":"<<","preMonth":"<","date":self.dateInfo["getDate"](),"nextMonth":">","nextYear":">>"}; 
for(var i in o){ 
var __ = o[i], tag = document.createElement("span"); 
tag.innerHTML = __.toString(); 
i!="date" && (tag.onclick = (function(fn){ 
return function(){fn.call(self);} 
})(self[i]) 
); 
i=="date" && (tag.className = "dateShow",self.datePlace = tag); 

self.head.appendChild(tag); 
} 
self.head.className = "cal-head"; 

//body 
self.buildBody(); 
self.body.className = "cal-body"; 

//foot 
self.timePlace = document.createElement("span"); 

var dInfo = self.dateInfo; 
var Valid = function(num,max){ 
num = /^\d+$/.test(num) ? num : -1; 
if(num<0 || num>max){ 
return false; 
} 
return true; 
}; 

var times = {"hour":["getHours","setHours"],"minutes":["getMinutes","setMinutes"],"seconds":["getSeconds","setSeconds"]}; 
for(var i in times){ 
var t = document.createElement("span"); 
var tInput = document.createElement("input"); 
t.innerHTML = tInput.value = dInfo["now"][times[i][0]](); 

tInput.style.display = "none"; 
t.onclick = (function(tIpt){ 
return function(){ 
this.style.display = "none"; 
tIpt.style.display = "inline-block"; 
tIpt.select(); 
} 
})(tInput); 
tInput.onblur = (function(t,setFn){ 
return function(){ 
this.style.display = "none"; 
if(Valid(this.value,(setFn=="setHours"?23:59))){ 
t.innerHTML = this.value; 
dInfo["now"][setFn](parseInt(this.value)); 
} 
t.style.display = "inline-block"; 
} 
})(t,times[i][1]); 

self.timePlace.appendChild(t); 
self.timePlace.appendChild(tInput); 

if(i!="seconds"){ 
var sp = document.createElement("span"); 
sp.innerHTML = ":"; 
self.timePlace.appendChild(sp); 
} 
} 
self.timePlace.className = "timeShow"; 

var okBtn = document.createElement("span"); 
okBtn.innerHTML = "Ok"; 
okBtn.className = "okBtn"; 
okBtn.onclick = function(){ 
alert(dInfo["getSelectTime"]()); 
}; 

self.foot.appendChild(self.timePlace); 
self.foot.appendChild(okBtn); 
self.foot.className = "cal-foot"; 

//relation 
this.box.appendChild(self.head); 
this.box.appendChild(self.body); 
this.box.appendChild(self.foot); 

this.box.className = "cal-box"; 
document.body.appendChild(this.box); 
}, 
buildBody : function(){ 
var self = this,dInfo = self.dateInfo, week = dInfo["weekOfFirstDay"](),days = dInfo["getDaysCount"](),day = dInfo["now"].getDate(); 
var cDay = function(inner,ev){ 
var tag = document.createElement("span"); 
tag.innerHTML = inner; 

ev && (tag.onclick = function(){ 
self.selectDay.className = self.selectDay.className.replace(" selectDay",""); 
self.selectDay = this; 
self.selectDay.className = self.selectDay.className + " selectDay"; 

self.dateInfo.selectDay = inner; 
}); 

return tag; 
}; 
var domPgm = document.createDocumentFragment(); 
//weedInfo 
var weeks = ["天","一","二","三","四","五","六"]; 
for(var i=0;i<weeks.length;i++){ 
domPgm.appendChild(cDay(weeks[i])); 
} 

//上个月的补白 
for(var i=0;i<week;i++){ 
domPgm.appendChild(cDay("")); 
} 
//本月信息 
parseInt(self.dateInfo.selectDay) > days && (self.dateInfo.selectDay = days); 
for(var i=1;i<=days;i++){ 
var tag = cDay(i,true); 
self.dateInfo.selectDay == i && (self.selectDay = tag,tag.className=" selectDay"); 
i===day && (tag.className=tag.className+" nowDay"); 
domPgm.appendChild(tag); 
} 
//下个月的补白.... 

self.body.innerHTML = ""; 
self.body.appendChild(domPgm); 

}, 
dateShow : function(){ 
this.datePlace.innerHTML = this.dateInfo["getDate"](); 
}, 
updateUI : function(){ 
this.dateShow(); 
this.buildBody(); 
}, 
preYear : function(){ 
this.dateInfo["now"].setYear(this.dateInfo["now"].getFullYear()-1); 
this.updateUI(); 
}, 
preMonth : function(){ 
var dInfo = this.dateInfo,m = dInfo["now"].getMonth(); 
--m; 
m<0 && (m = 11,dInfo["now"].setYear(this.dateInfo["now"].getFullYear()-1)); 
dInfo["now"].setMonth(m); 
this.updateUI(); 
}, 
nextMonth : function(){ 
var dInfo = this.dateInfo,m = dInfo["now"].getMonth(); 
++m; 
m>11 && (m = 0,dInfo["now"].setYear(this.dateInfo["now"].getFullYear()+1)); 
dInfo["now"].setMonth(m); 
this.updateUI(); 
}, 
nextYear : function(){ 
this.dateInfo["now"].setYear(this.dateInfo["now"].getFullYear()+1); 
this.updateUI(); 
} 
}; 

css代码:

 
.cal-box{ 
width:210px; 
font-family:"Courier New", Courier, monospace; 
font-size:14px; 
} 
.cal-box span{ 
display:inline-block; 
text-align:center; 
} 

.cal-head{ 
background-color:#FC3; 
} 
.cal-head span{ 
width:20px; 
font-weight:bold; 
color:#69C; 
text-decoration:underline; 
cursor:pointer; 
} 
.cal-head .dateShow{ 
width:130px; 
text-decoration:none; 
} 

.cal-foot{ 
background-color:#FC3; 
} 
.cal-foot .timeShow{ 
width:160px; 
text-align:left; 
} 
.cal-foot .timeShow input{ 
width:24px; 
height:12px; 
font-size:12px; 
} 
.cal-foot .okBtn{ 
width:50px; 
background-color:#CCC; 
cursor:pointer; 
} 

.cal-body{ 
background-color:#9CF; 
} 
.cal-body span{ 
display:inline-block; 
width:30px; 
text-align:center; 
cursor:pointer; 
} 
.cal-body .nowDay{ 
background-color:#F00; 
} 
.cal-body .selectDay{ 
text-decoration:underline; 
} 

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