生成500个0-1000的随机数&&数组查找—小练习 

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    for (var i = 0; i < 550; i++)
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        obody.innerHTML += Math.round(Math.random()*1000)+ ' ';
        
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    var arr = [1,2,3,4,5,6,7,8,9];
    var num = 3;
    alert(arr.join('').indexOf(num));
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posted @ 2014-12-28 00:16  mayufo  阅读(625)  评论(0)    收藏  举报