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yuezk/get-random.js

Created October 23, 2013 06:53
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得到指定数字之间的随机数，来自《JavaScript高级程序设计》
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get-random.js
function selectFrom(lowerValue, upperValue) {
var choices = upperValue - lowerValue + 1;
return Math.floor(Math.random() * choices + lowerValue);
}
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