jQuery，月历，左右点击事件实现月份的改变

html页面：

<div class="recordbriefing-title-top-body">
<span class="record-left"></span>
<p class="record-Ptime"></p>
<span class="record-right"></span>
</div>

css样式：

.record-left{
content: "";
width: 0;
height: 0;
float: left;
border-top: 10px solid transparent;
border-right: 10px solid red;
border-bottom: 10px solid transparent;
margin-top:5px;
}
.record-right{
content: "";
width: 0;
height: 0;
float: right;
border-top: 10px solid transparent;
border-left: 10px solid red;
border-bottom: 10px solid transparent;
margin-top:5px;
margin-right: 25px;
}
.record-Ptime{
display:inline-block;
width: 80%;
font-size: 16px;
color: #000;
text-align: center;
line-height: 31px;
}

js部分：

$(function() {
var rsValue='';
var todayData=new Date();
var year= todayData.getFullYear();
var month= todayData.getMonth();//月份从0开始
// console.log(typeof month);
var day=new Array(31,28,31,30,31,30,31,31,30,31,30,31);
var todayDay;

for(var i=0;i<day.length;i++){
if(i==month){
todayDay=day[i];
}
if((year%4)==0){
if((month+1)==2){
todayDay=29;
}
}
}

if(month>9){
rsValue=year+'.'+(month+1)+'.01~'+year+'.'+(month+1)+'.'+todayDay;
}else{
rsValue=year+'.0'+(month+1)+'.01~'+year+'.0'+(month+1)+'.'+todayDay;
}
// console.log(rsValue);
// 得到的拼接时间显示在页面上
$(".record-Ptime").empty();
$('.record-Ptime').append(rsValue);
changeTime();

// 上个月 左边改变时间事件
var j=1;
$(".record-left").on("click", function(){
j--;

// 判断月份是否>0，是13时就年份加1
if((month+j)<=0){
year-=1;
month=11;
j=1;
}
for(var i=0;i<day.length;i++){
if(i==(month+j-1)){
todayDay=day[i];
}
if((year%4)==0){
if((month+j)==2){
todayDay=29;
}
}
}
if((month+j)>9){
rsValue=year+'.'+(month+j)+'.01~'+year+'.'+(month+j)+'.'+todayDay;
}else{
rsValue=year+'.0'+(month+j)+'.01~'+year+'.0'+(month+j)+'.'+todayDay;
}
// 得到的拼接时间显示在页面上
$(".record-Ptime").empty();
$('.record-Ptime').append(rsValue);
changeTime();

});

// 下个月 右边改变时间事件
$(".record-right").on("click", function(){
j++;

// 判断月份是否>12，是13时就年份加1
if((month+j)>12){
year+=1;
month=0;
j=1;
}
for(var i=0;i<day.length;i++){
if(i==(month+j-1)){
todayDay=day[i];
}
if((year%4)==0){
if((month+j)==2){
todayDay=29;
}
}
}
if((month+j)>9){
rsValue=year+'.'+(month+j)+'.01~'+year+'.'+(month+j)+'.'+todayDay;
}else{
rsValue=year+'.0'+(month+j)+'.01~'+year+'.0'+(month+j)+'.'+todayDay;
}
// 得到的拼接时间显示在页面上
$(".record-Ptime").empty();
$('.record-Ptime').append(rsValue);
changeTime();
});

});