The jQuery Mobile Progress Bar with Percentage (called Tolito Progress Bar) is a jQuery Mobile plugin which, offers the  functionality to create and manage a progress bar. In addition it  provides the options to set the progress bar's outer theme and inner  filling theme on the basis of the jQuery Mobile standard themes, to  show a percentage completion counter, to set whether the progress bar  has normal or mini size, to define the interval which specifies the  filling frequency rate, to configure the max value of the outer bar and  set the initial value of the filling inner bar. The idea of JavaScript  prototype chaining has been used in order to enable the chaining of separate method calls where each call is made on the same instance.