补零函数和随机数函数
// 补零函数
function toDub(num) {
return num > 9 ? '' + num : '0' + num;
}
// 封装随机数
function rnd(m, n) {
return parseInt(Math.random() * (n - m) + m);
}
author:Lik
Endeavoring to powerless, struggling to move yourself.
Endeavoring to powerless, struggling to move yourself.

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