About the difference between root and alias under localization

This article is well written .https://www.cnblogs.com/my_life/articles/7070805.html
The following is the content of this article

My practical application

I want to visit C:\javaweb\apache-tomcat-8.5.45\apache-tomcat-8.5.45\webapps\ROOT In the catalog index.html file . The following is an introduction to the use of root and alias How to configure localtion.

hypothesis server_name yes www.abc.com

1、 Use root

location /ROOT{
	root     "C:/javaweb/apache-tomcat-8.5.45/apache-tomcat-8.5.45/webapps";
	index    index.html;
}

In the above code

1、location  Must be followed by root Subdirectory name under path , It can also be   /
2、#  Double quotation marks of the path can be added or not 
3、 The slash of the path can be reversed or , this is it 
		C:\javaweb\apache-tomcat-8.5.45\apache-tomcat-8.5.45\webapps

During the visit www.abc.com/ROOT visit

2、 Use alias

location /home{
	alias    C:/javaweb/apache-tomcat-8.5.45/apache-tomcat-8.5.45/webapps/ROOT/;
	index    index.html;
}

1、 below home Where can I write any value , Acting as an agent “ Virtual path ”.

During the visit www.abc.com/home visit