摘要:
class LightFn{ async run(){ while(true){ console.log('this is green 3000'); await this.sleep(3000); console.log('this is yellow 1000'); await this.sle 阅读全文
摘要:
/* abc abc abc*/function concat(s,n){ let a = new Array(n); a.fill(s); let str = a.join(''); a = null; return str;}function concat1(s, n){ let count = 阅读全文