XML

1. The Difference Between XML and HTML
  • XML was designed to carry data - with focus on what data is
  • HTML was designed to display data - with focus on how data looks
  • XML tags are not predefined like HTML tags are
2. Example of XML
<?xml version="1.0" encoding="UTF-8"?>
<note>
  <date format="yyyy-mm-dd">2018-12-18</date>
  <hour>21:00</hour>
  <to>N.M</to>
  <to N.M />  #the same as above
  <from>Zhang</from>
  <body>Don't forget that thing</body>
</note>
3. XML Attribute
<date format="yyyy-mm-dd">2018-12-18</date>

The thing format="yyyy-mm-dd"is the attribute, and it must always be QUOTED

4. XML Comments
<!-- This is a comment -->
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