function getRandomColor(flag = true) {
let arr = ['0', '1', '2', '3', '4', '5', '6', '7','8', '9', 'a', 'b', 'c', 'd', 'e', 'f']
let str = '#'
if(flag) {
for(let i = 1; i <= 6; i++) {
let random = Math.floor(Math.random() * 16)
str += arr[random]
}
return str
}else {
let r = Math.floor(Math.random() * 256)
let g = Math.floor(Math.random() * 256)
let b = Math.floor(Math.random() * 256)
return `rgb(${r}, ${g}, ${b})`
}
}
console.log(getRandomColor(true))
console.log(getRandomColor(false)) //十六进制
