Post and get in Ajax

Get: multiple requests return the same result. You can use get to obtain data from the server;

Post: the status on the server needs to be changed.

When using post, you need to set the Content-Type header of the XMLHTTPRequest object, as shown below:

XMLHTTP. setRequestHeader ("Content-Type", "application/X-WWW-form-urlencoded ");

The XMLHTTPRequest object provides two attributes that can be used to access the server response: responsetext provides the response as a string, and responsexml provides the response as an XML object.

Differences Between Dom and JavaScript

Dom is an API for HTML and XML documents. It provides a structured representation of documents and defines how to access the structure of documents through scripts. Javascript is the language used to access and process Dom.