function syntaxHighlighting() {  
 var n = 33;  
 var s = "hello, こんにちは";  
 console.log(s);  
}  

* plain
* *emphasis*
* **strong emphasis**
* strikethrough
* inline code

1. Numbered list
2. Numbered sub-list
3. Numbered sub-sub-list
   \n 2. Link

An image:

> Block quote.
> *With* **some** markdown.

If **TeX Math** support is enabled, this is the quadratic equation:
$-b \pm \sqrt{b^2 - 4ac} \over 2a$

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Header 2

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Here's a horizontal rule:

code block  
with no highlighting