You must be wondering why did we ad

You must be wondering why did we add a link to the textboxclone.js from a Content page rather than doing it from a Master Page. The reason is, if we had referenced the textboxclone.js file in the MasterPage directly, the code would be downloaded for every content page, even if it was not needed. Referencing it from a Content Page makes sure that the resource is used only when this content page is requested. That’s it. Run the code and you will see the textbox text cloning in action.