we can change one page to another page with the same url with the help of parameter
for that first we need to add the parameter value and we need to change the condition to it
for this we need to add the code in extension and template also
first we need to add the parameter to template file:

and we need to give values for that.
in extension: in this we need to add the view file to the define



for adding to a extention we need to find the correct file to add the code and view file otherwise it wont work
after passing a parameter value we need to check in console it was coming or not.