Get the last day of a month in javascript

Get the last day of a month in javascript

Get the last day of a month in javascript

function getLastDay(){
var mDate = "10";
var mMonth = "4";
var mYear = "2008";
var sDate = mDate;

if(mMonth == "4" || mMonth == "6" || mMonth == "9" || mMonth == "11" ){
if( mDate > 30 ){
sDate = 30;
}
}else if( mMonth == "2" ){
var mRemainder = (mYear%4);
if ( mRemainder > 0 ){
if( mDate > 28 ){
sDate = 28;
}
}else{
if( mDate > 29 ){
sDate = 29;
}
}
}

return sDate ;
}