Grouping Scripts and Non-Blocking Scripts

Developers might often have different files of JavaScript codes with multiple functions and handlers available to them. However, at certain times, they may need to be grouped together into one script. Grouping scripts allows the merging of different JavaScript codes to form one script. Before grouping different scripts, a developer needs to first decide whether the script file that is to be executed should be inline or external. Developers should know about inline and external JavaScript files to understand situations where each of them can be best utilized.