UL ol di three difference

1.UL is an unordered list, which means that there is no arrangement limit to add Li arbitrarily;
<ul>
<li> Feel free to place </li>
<li> Feel free to place </li>
<li> Feel free to place </li>
</ul>
. Can be arbitrarily placed
. Can be arbitrarily placed
. Can be arbitrarily placed

2.ol on the sequence list, according to the Li you write before and after the order;
<ol>
<li> I am the first </li>
<li> I am the second </li>
<li> I am the third </li>
</ol>
1. I am the first
2. I am the second
3. I am the third

The 3.DL is the definition list, which defaults to the pre-and post-level relationships; Definition List
<dl>
<dt> I am the head </dt>
<dd> I am content </dd>
<dd> I am content </dd>
</dl>
I'm the head.
--I am the content
--I am the content

UL ol di three difference