How to Smell your JavaScript Code

Symptoms that you are doing bad coding for front-end

Transcript

1. How to Smell your JavaScript Code - Narendra Sisodiya @nsisodiya 1
2. • Context of this presentation is Large Scale, Scalable, Single page, Web Applications. • Scalability is a challenge ! • Managing codebase is difficult. Context 2
3. 3 How to Smell your code Symptoms that you are doing bad coding for front- end
4. • Do you fear touching your old codebase • Do you fear replacing your old codebase Fear to touch 4
5. • You do not know exact flow of your application because some framework in doing Magical Stuff for you Magic 5
6. • You are not sure that your code changes may affect some unknown part of your application. • Your changes leads to new bugs. Unpredictable 6
7. • You yourself know that you are coding a Jugaad • because you are helpless* Jugaad * - may be because of framework 7
8. No Fine Control • Your framework or library forcing you in certain way . • Automate many things so that you cannot get control. • tools/framework/ libraries are for your help & not to trouble you. 8
9. Code Duplication • You repeat same code and logic many places • You do not refactor your code. 9
10. Dead End • With release of new version of framework you cannot migrate (Ex - Angular 2.0) • Why work with a framework with uncertain future. • You cannot work on your own code which you wrote 6 month ago. 10
11. Unmovable Code • You cannot move your widget/ module/ component from one page (place) to another. • You code sticked to your DOM structure. 11
12. Obvious but take time • Sometimes things are so obvious but take time and efforts to complete • restricted by framework/library 12
13. Reproducing Bug !== easy • Reproducing bugs take long time. • Some times bug is just a spell mistake but it take hour to setup and reach at that STATE 13
14. Frustration • You must enjoy coding. • If you Frustrated then there is a problem with either you or your codebase 14
15. • All Images are Copyrighted by some unknown users, which I do not know. They must be proud that their images is so papular that it appears on first page of google image search with relevant keywords. • I have copied Images shamelessly form Internet for global benefit. Credit 15