主题列表：juejin, github, smartblue, cyanosis, channing-cyan, fancy, hydrogen, condensed-night-purple, greenwillow, v-green, vue-pro

贡献主题：github.com/xitu/juejin…

theme: juejin highlight: ---const isPrime = (x) => { for (let i = 2; i * i <= x; ++i) { if (x % i == 0) { return false; } } return true; }

var countPrimes = function(n) { let ans = 0; for (let i = 2; i < n; ++i) { ans += isPrime(i); } return ans; };