两个选择题 promise问题 setTimeOut(()=>{     conslole.log(4); }) new Promise((resolve,reject)=>{     resolve()     console.log(1) }).then(()=>{     console.log(3); }) console.log(2) css定位问题 两个问答题(问答题就是编程题) 列出所有匹配项 给一个二维数组例如 输入的 [     ['red','yellow','blue'],     ['s','m','l'], ...