怎样得到1到9随机不重复的9次结果？

[中国推广网]

公司年会抽奖，javascript怎样随机从一到九产生不同的九次结果，每次不一样？

var jiangpin = new Array()
jiangpin[9] = "豆浆机"
jiangpin[1] = "美的微波炉"
jiangpin[2] = "加湿器"
jiangpin[3] = "拍立得"
jiangpin[4] = "迪奥香水"
jiangpin[5] = "施华洛世奇首饰"
jiangpin[6] = "kindle阅读器"
jiangpin[7] = "1000元大奖"
jiangpin[8] = "888元大奖"

[think_wei]

应该是每次生成一个随机数的问题吧

[roffer]

var arr = ['豆浆机','美的微波炉','加湿器','拍立得','迪奥香水','施华洛世奇首饰','kindle阅读器','1000元大奖','888元大奖']

        /**
         * 获取不重复的随机数
         * @param count:生成随机数个数
         * @param range:数值范围
         */
        function getRandomList(count,range){
            count = count || 1,
            range = range || [1,count + 1];

            min = range[0],
            max = range[1];

            unique = arguments[2] || {},
            result = arguments[3] || [];

            var num = Math.floor(Math.random() * (max - min) + min);
            if(result.length < count){
                if(!unique[num]){
                    result.push(num);
                    unique[num] = 1;
                }
                getRandomList(count,range,unique,result);
            }

            return result;
        }
        
        var indexs = getRandomList(9,[0,9]);
        for(var i in indexs)console.log(arr[indexs[i]])

[wdbjsh]

这个题目可以简单的用一个 随机数来处理。

var jiangpin = new Array()
jiangpin[9] = "豆浆机"
jiangpin[1] = "美的微波炉"
jiangpin[2] = "加湿器"
jiangpin[3] = "拍立得"
jiangpin[4] = "迪奥香水"
jiangpin[5] = "施华洛世奇首饰"
jiangpin[6] = "kindle阅读器"
jiangpin[7] = "1000元大奖"
jiangpin[8] = "888元大奖"

for(var i=0;i<9;i++){
var n=parseInt(Math.random() *10)
var j=jiangpin .length-1 % n ;console.log(i,j);
console.log(jiangpin.splice(j,1)); //splice 低版本的ie不支持，需要hack
}

[阿尼亚学算法]

利用math.random 对象实现

[无聊的上午]

将结果存入数组，每次随机结果都与数组中已有结果比较，如果相等就继续随机，如果不相等则将结果存入数组，判断数组长度，如果长度大于等于9，则跳出循环，循环方式采用while(true){}

[yaotomo]

	<script type="text/javascript">
		var data = ["豆浆机","美的微波炉","加湿器","拍立得","迪奥香水","施华洛世奇首饰","kindle阅读器","1000元大奖","888元大奖"];
		var index = getRandomArray();

		for(var i=0;i<index.length;i++){
			console.log(data[index[i]-1]);
		}

		function getRandomArray()
		{
			var array = [];
			while (array.length < 9)
			{
				var random = Math.floor(Math.random() * 9) + 1;
				if (array.indexOf(random) < 0)
				{
					array.push(random);
				}
			}
			return array;
		}

	</script>

[当作看不见]

var jiangpin = new Array()
jiangpin[0] = "豆浆机"
jiangpin[1] = "美的微波炉"
jiangpin[2] = "加湿器"
jiangpin[3] = "拍立得"
jiangpin[4] = "迪奥香水"
jiangpin[5] = "施华洛世奇首饰"
jiangpin[6] = "kindle阅读器"
jiangpin[7] = "1000元大奖"
jiangpin[8] = "888元大奖"
var  i = 9;
while(i--){
   var index =  Math.floor( Math.random()*i);
   console.log(jiangpin[index]);
   jiangpin.splice(index,1);
}

[s8656505]

// var data = ["豆浆机", "美的微波炉", "加湿器", "拍立得", "迪奥香水", "施华洛世奇首饰", "kindle阅读器", "1000元大奖", "888元大奖"]; var data = ["豆浆机", "美的微波炉", "加湿器", "拍立得", "迪奥香水", "施华洛世奇首饰", "kindle阅读器", "1000元大奖", "888元大奖","big","large"]; var length = data.length; function getReward(data){ var length = data.length; var index = Math.floor(Math.random()*length); console.log(data[index]); data.splice(index,1); return data; } for(var i=0;i<length;i++){ getReward(data); // console.log(data); }