Separating JavaScript Code File

 • Re-use the code  

• No need of re-writing on each webpage  

• Code only has to be tested once for errors   

• File/JavaScript is cached by web browser  

• ...reduces network access time 

• JavaScript code embedded in webpages can slow loading times

• ...webpage can slow while browser executes code  

• Can separate code into different conceptual areas  

• ...provides modularity to code  

• ...separate html and JavaScript code so easier to read/maintain.