What are the codes you use to make following the collapse table ?

You should use the css property border-collapse: collapse. Check this url for more information about table properties http://quirksmode.org/css/css2/tables.html

For functionalities like this, try using Telerik or Kendo UI. They have a fantastic library of controls and functions.

simply use bootstrap framework, easy to implement, crossbrowser compatible.

USE BORDER-COLLAPSE:COLLAPSE CSS

There are multiple method to achieve the above senerio Ex data- table 

Use bootstrap jquey or css.

It is a good question .....

Try this one,

table {    border-collapse: collapse;}table, th, td {    border: 1px solid black;}

all of the languages it can used to this

but i prefer HTML