随机数据显示功能、选号器

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<script language="javascript">

       
       
                function Quickpick()
                {
                        var ball
                       
                        for( ball = 0; ball < 5; ball++)
                        {
                                this[ball] = parseInt((Math.random() * Math.pow(10,16)) % 49) + 1;
                                for(var list = 0; list < ball; list++)
                                {
                                        if(this[list] == this[ball])
                                        {      
                                                list = ball;
                                                ball--;
                                        }