After coding in ExtJs for more then a year, these are my tips. Some of these are from readings others are personal experience.
1. Commas and semicolons are important!
One misplaced or missing comma will result in a blank page. Make sure to use commas after each property except the last property.
2. Naming conventions
Store in the plural. Example: “TeslaCars.js”
View, in the singular. Example: “TeslaCar.js”
Model, in the singular. Example: “TeslaCar.js”
Also lookup variable naming scheme.
3. Global variables
Global variable usage is discouraged.
4. Override instead of recreation
Instead of creating a function/view/model/store, try to override existing ones. It will save you a couple lines of code.
5. Alias, Xtypes, Widgets
They could be synonyms of each other depending on usage. Be careful on what you name your components. Make sure not to use any of the reserved xtype/alias.
6. Nesting is discouraged
Try to avoid excessive nesting.
7. Multiple controllers instead of one monster controller
Try to create multiple controllers if your controller grows for the sake of maintainability
8. Folder structures
Look up Extjs recommendation and documents on folder structure before you try to come up with your own scheme.
9. Use of ID
Extjs Discourages the use of ID. It causes problems when you create multiple instance of a object. Instead use itemID.
10. Do not edit framework codes
Use override. Or it will be a pain upgrading to a newer version.
11. Reuse, reduce recycle
If you find yourself writing same code over the second time, find a way to export the code in a separate xtype so it could be shared across classes.
12. Chrome debugging tools
EXT JS resources
- http://docs.sencha.com/extjs/4.2.2/#!/example/sandbox/sandbox.html Live code example. Helpful if you want to play around with code without setting up a dev environment.
- https://docs.sencha.com/extjs/4.2.6/ Docs