Why we use url variable
in many projects I saw developer using URL variable by using ? sign, friends what is use of URL variable, please tell us why it is important
Imagine you have code where you use url of some site 100 times. Now you want to change that url. When you use variable you have to change 1 line of code. Otherwise you have to find and change 100 lines of code and pray to not do a single mistake jn process.