> For the complete documentation index, see [llms.txt](https://xiaohesong.gitbook.io/today-i-learn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xiaohesong.gitbook.io/today-i-learn/front-end/javascript/prototype/basic.md).

# basic

## 混淆的点

* 函数不是构造函数，仅当`new`调用时，函数才是 **构造函数调用**. 

## Object.create

```javascript
Object.create = function(o) {
  function F(){}
  F.prototype = o;
  return new F();
};
```