How to use HTML character entities and text formatting tags

Editor to share with you how to use HTML character entities and text formatting tags, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Reserved characters in HTML character entities / HTML must be replaced with character entities, and some characters that cannot be found on the keyboard can also be replaced with character entities.

In HTML, some characters are reserved. You cannot use text that contains these characters. The less than sign () cannot be used in HTML because browsers mistook them for tags. If we want to display reserved characters correctly, we must use character entities (character entities) in the HTML source code. Character entities look like this:

1 & entity_name

2 or 3 & # entity_number; 4 < or < or