Select (Check) one (single) CheckBox in ASP.Net GridView using JavaScript

Here Mudassar Ahmed Khan has explained with an example, how to select (check) one (single) CheckBox in ASP.Net GridView using JavaScript. By default, multiple CheckBoxes in GridView are meant for multiple selection, thus in order to make it work as single selection i.e. only one (single) CheckBox can be selected at a time, JavaScript needs to be used to achieve the same.