Symphony.

http://www.mkyong.com/jquery/how-to-add-remove-textbox-dynamically-with-jquery/

in the above link they used a textbox - add/remove i want to achieve the same in the symphony after adding the textboxes i want to added the textbox values in the backend using a single event how to achieve this

guidance is needed

Set up a few textboxes in a section named

textbox1 textbox2 textbox3 ...

as many as you want to be able to add

or you could use eventex and create a new section with one textbox and a selectboxlink so you can add as many as you want. you would also need to change the id to the format of eventex

thanks @jeffleeder

i need to know , it is possible to add multiple entries using single event ?

Take a look at Subsection Manager, Meta Keys or Dynamic Text Group extensions.