【Udemy排名第一的JavaScript课程】2023最新完整JavaScri

课程重点：

1.在JS函数内部修改函数参数，基本类型和引用类型的区别。

const num= 6;

const person = {

name:"小红",

age:18

}

function change(value,obj){

value = 5；

obj.name = "小明"；

}

change(num,person);

console.log(num); // 5

console.log(person); // name = "小明"

2.JS 只有按值传递，没有按引用传递。

But it's confusing ,because as we just learned for objects ,we do in fact pass in a reference. So the memory address of the object. However ,that reference itself is still a value. It's simply a value that contains a memory address. So basically we pass a reference to the function,but we do not pass by reference, and this is an important distinction.

3.学过c语言的胖友可能更懂按引用传递，咱还不是很懂。