@@ -4,6 +4,5 @@
-    let foo = bar.baz([1, 2, 3]);
-    foo = foo + 1;
+    const foo = bar.baz([1, 2, 3]) + 1;
     console.log(`foo: ${foo}`);

function fancyAlert(arg) {
  if (arg) {
    $.facebox({ div: '#foo' })
  }
}

<button data-balloon-length="fit" aria-label="What about something really big? This may surpass your window dimensions. Imagine you're on that boring class with that boring teacher and you didn't slept so well last night. Suddenly you're sleeping in class. Can you believe it?!" data-balloon-pos="up">My width will fit to element</button>

# h1
## h2
### h3
#### h4
##### h4
###### h5

function get(key) {
    return m[key];
}

/**
 * nth element in the fibonacci series.
 * @param n >= 0
 * @return the nth element, >= 0.
 */
function fib(n) {
    var a = 1,
        b = 1
    var tmp
    while (--n >= 0) {
        tmp = a
        a += b
        b = tmp
    }
    return a
}

document.write(fib(10))

class Employee:
   empCount = 0

   def __init__(self, name, salary):
        self.name = name
        self.salary = salary
        Employee.empCount += 1

    代码块（左侧有八个不可见的空格）

<table>
    <tr>
        <th rowspan="2">值班人员</th>
        <th>星期一</th>
        <th>星期二</th>
        <th>星期三</th>
    </tr>
    <tr>
        <td>李强</td>
        <td>张明</td>
        <td>王平</td>
    </tr>
</table>