上QQ阅读APP看书，第一时间看更新

How to do it...

<html>
 <meta charset="UTF-8" />
  <head>
  </head>
  <body>
  Open Your Console!
  </body>
</html>

Open hello.html by opening your browser, and entering the following URL: http://localhost:8000/hello.html.

Lets do what the page tells us and open up the Developer Console. For both Firefox and Chrome, the command is the same:
- On Windows and Linux:

Ctrl + Shift + I

Cmd + Shift + I

Next, in the same directory, create a file called hello.js, which exports a function named sayHi that writes a message to the console:

// hello.js 
export function sayHi () { 
  console.log('Hello, World'); 
}

Next add a script module tag to the head of hello.html that imports the sayHi method from hello.js (pay attention to the type value).

Reload the browser window with the Developer Console open and you should see the hello message displayed as text:

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