传址
let a = {
"name": "my"
}
let fun = (b1)=>{
console.log(b1.name)
b1.name = "you"
console.log(b1.name)
}
fun(a)
console.log(a.name)
传值
let a = 10
let fun = (b1)=>{
console.log(b1)
b1++
console.log(b1)
}
fun(a)
console.log(a)