In this post we will discuss how to get the internal name of a field of a SharePoint list from the browser. You can check out this article
to know how to retrieve column display name and internal name using SharePoint object model.
Also you can check out my previous posts on:
To know about the column internal name:
Go to the List Settings and then go to the Columns section.
Then click on the Column for which you want to retrieve the internal name as shown in the figure below:
This will open the Change Column page. Check the URL:
The value after the Field attribute is the internal name. Here the internal name is FirstName and display name is First Name. Refer the fig below:
If the Field contains any special character, then Follow this link
to get the internal name.