課程重點(diǎn)：

1.在JS函數(shù)內(nèi)部修改函數(shù)參數(shù)，基本類型和引用類型的區(qū)別。

const num= 6;

const person = {

name:"小紅",

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 只有按值傳遞，沒有按引用傳遞。

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.學(xué)過c語言的胖友可能更懂按引用傳遞，咱還不是很懂。