//生成从minNum到maxNum的随机数 function randomNum(minNum,maxNum){ switch(arguments.length){ case 1: return parseInt(Math.random()*minNum+1,10); break; case 2: return parseInt(Math.random()*(maxNum-minNum+1)+minNum,10); break; default: return 0; break; } }
//如果觉得不够随机,可以试试N个randomNum,个人感觉这样随机率与避免重复更好
参考地址:https://www.cnblogs.com/starof/p/4988516.html