For Client scripts you should be able to use all the normal dev tools provided by your browser. Chrome’s Profiler, for instance, will record your interactions with the page, then show you a breakdown of every function call and how long it took.

Hi @NReddy,

I would agree with @ericgrubaugh with the use of profilers on browsers. Depending on which part of performance you want to try Chrome offers an array of solutions like Timeline option which gives you the option for check the execution of functions with their corresponding activity like painting the page or rendering some values, Profiles option which gives your options like JS CPU profile to check the total consumption on your PC resources for the execution of your scripts. Firefox also has some of this options once you enable Firebug on your Firefox browser