\(\LaTeX\)、markdown、HTML
\(7122\)
7122
\(\bar{x}=\sum_{i=1}^n x_i/n\)
\(x^2\)
\(\int_0^{\pi/2} \sin^2 x\ dx\)
\(\phi\)
\(\pi\)
\(\theta\)
這是很好用的線上編輯器喔
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<h1>Heading</h1>
<p>paragraph.</p>
</body>
</html><開tag>
</關tag><!DOCTYPE html>
<!-- This is a comment --><html>
你的code放這裡
</html><head>
<title>Page Title</title>
</head><body>
</body><p>paragraph</p>
<p>paragraph</p>自動換行+換行距
<h1>heading</h1>
<h2>heading</h2>
<h3>heading</h3>
<h4>heading</h4>
<h5>heading</h5>
<h6>heading</h6> <br>   半形空格
  全形空格
  窄空格<a href="https://www.youtube.com/">text</a><iframe src="https://www.youtube.com/watch?v=Ml-PTAxOyuo">
</iframe>(只寫這樣通常嵌不進去 ; _ ; )
<img src="https://i.imgur.com/0Y1b8Xvb.jpg" with="600" heigh="400" alt="圖片"><ul>
<li>first item</li>
<li>second item</li>
<li>third item</li>
</ul><ol>
<li>first item</li>
<li>second item</li>
<li>third item</li>
</ol><ol>
<li>ordered item 1</li>
<li>
ordered item 2
<ul>
<li>unordered item 2-1</li>
<li>unordered item 2-2</li>
</ul>
</li>
<li>ordered item 3</li>
</ol><dl>
<dt>item</dt>
<dd>explaination</dd>
</dl><del>text<del ><hr>
<button type="button">^_^</button><q>7122!</q><strong>7122</strong><pre>
7122 7122
7122
</pre>保留裡面的格式(換行、空格)
<mark>7122</mark><i>7122</i> <em>7122</em>和<i>的差別在搜尋引擎會知道你在強調
<center>7122</center><table>
<tr>
<td>7122</td>
<td>7123</td>
</tr>
<tr>
<td>7124</td>
<td>7125</td>
</tr>
</table><textarea name="mytext">initial text</textarea>