# 

##  JavaScript 

JavaScript script language

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JavaScript  ECMAScript 5.1  JavaScript ES6 [ECMAScript 6](http://es6.ruanyifeng.com/)

##  JavaScript

JavaScript 

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## 



 Chrome Developer Toolsconsole JavaScript 

 Chrome 

- `Option + Command + J`Mac`Ctrl + Shift + J`Windows / Linux
-  F12`Option + Command + I`Mac`Ctrl + Shift + I`Windows / Linux Console 

`Enter``Shift + Enter`



```javascript
function greetMe(yourName) {
  console.log('Hello ' + yourName);
}

greetMe('World')
// Hello World
```