lovecoding
/
web0715


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        function foo(year){
            if((year%4==0&&year%100!=0) || year%400==0){
                return true;
            }else{
                return false;
            }
        }

        function DayOfYear(d){
            var monthArr = [31,28,31,30,31,30,31,31,30,31,30,31];
            var thisYear = d.getFullYear();
            var thisMonth = d.getMonth();
            var thisDate = d.getDate();

            var resDayCount = 0;
            if(foo(thisYear)){
                monthArr[1] = 29
            }
            for(var i=0;i<thisMonth;i++){
                resDayCount += monthArr[i]
            }
            resDayCount += thisDate;
            return resDayCount;
        }

        var rightNow = new Date();
        console.log(DayOfYear(rightNow))
   </script>
</body>

</html>