Is it possible to make changes to a page source content variable through Ajax

Question

Is it possible to make changes to the page source content through Ajax loaded by a jsp include in the main jsp ?

If not is it possible to reload that portion of the page alone (the jsp that loads some of the content) and to have a portion of the content in the page source changed ?

Details:

I've a variable called page this var gets its content from a java controller as a map of <String key,map<String key,String value>then it performs multiple actions and adds different params to the map, convert it to JSON and sends it to a jsp.

Recently I wanted to do something different,I want to add a param to the 'page' variable called contentOfThePage this variable gets its content dynamically when the document is fully loaded, after that I perform an Ajax request to the controller to add the new param, but the problem is that the new changes never makes it to the page source unless i reload the page or i navigate to another page and this is causing a lot of trouble as the page source may contain the page content of the previous page!

Any idea on how to avoid this and make changes to the page source (NOT DOM) directly ?

keep in mind that the contents are added dynamically but i need a way to change the page source without impacting the performance by requesting a reload after the ajax request succeeded

Answer 1

First You want to update some data that is already there after page load

you already have a json so a rest call i assume you call it using ajax

now you added something else that you want to change

Yes it can be done actually

but not with the present set i assume you have a single jsp and trying to change that jsp

well fit whatever you want to change in a panel like a graph or anything else Add a button to top of the panel and on click the button url must be to the rest call so then data will be updated

I too have faced a similar problem with graphs, i needed the graph to give updated data without refreshing the whole page, so i put it inside a panel and wrote a rest controller that gives data for the graph and put a refresh button that calls this rest controller. This let me then update the graph without refreshing the rest of page