Include html in another html file

Use <object> tag:

<object data="filename.html"></object>

Method 1:

I think it would be best way to include an html content/file into another html file using jQuery.

You can simply include the jQuery.js and load the HTML file using $("#DivContent").load("yourFile.html");

For example

<html> 
  <head> 
    <script src="jquery.js"></script> 
    <script> 
    $(function(){
      $("#DivContent").load("another_file.html"); 
    });
    </script> 
  </head> 

  <body> 
     <div id="DivContent"></div>
  </body> 
</html>

Method 2:

There are no such tags available to include the file but there are some third party methods available like this:

<!DOCTYPE html>
<html>
<script src="http://www.w3schools.com/lib/w3data.js"></script>

<body>

<div w3-include-html="content.html"></div> 

<script>
w3IncludeHTML();
</script>

</body>
</html>

Method 3:

Some people also used server-side-includes (SSI):

<!--#include virtual="a.html" -->