星期几的不同写法

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>今天星期几</title>
</head>

<body>
    <script>
        //方案一
        /*var str="";
        var week = new Date().getDay();
        if(week==0){
            str+='今天是星期日';    
        }
        else if(week==1){
            str+='今天是星期一';    
        }
        else if(week==2){
            str+='今天是星期二';    
        }
        else if(week==3){
            str+='今天是星期三';    
        }
        else if(week==4){
            str+='今天是星期四';    
        }
        else if(week==5){
            str+='今天是星期五';    
        }
        else if(week==6){
            str+='今天是星期六';    
        }
        alert(str);*/
        
        
        //方案2
        /*var str='今天是星期';
        var week = new Date().getDay();
        switch(week){
            case 0:
                str+='日';
                break;
            case 1:
                str+='一';
                break;
            case 2:
                str+='二';
                break;
            case 3:
                str+='三';
                break;
            case 4:
                str+='四';
                break;
            case 5:
                str+='五';
                break;
            case 6:
                str+='六';
                break;    
        }
        alert(str);*/
        
        
        //方案三
        /*var a = new Array('日','一','二','三','四','五','六');
        var week = new Date().getDay();
        var str = "今天是星期" + a[week];
        alert(str);*/
        
        
        //方案四
        var str = '今天是星期' + '日一二三四五六'.charAt(new Date().getDay());
        alert(str)
        
    </script>
</body>
</html>
posted on 2014-08-14 13:45 雨为我停阅读(622) 评论(0) 收藏举报