Development
#37
Use local variables
When you call a global variable in JavaScript, the interpreter must check that:
- it exists in the current scope, in the scope above, etc.
- the variable has a value
- and more
To avoid all these checks, it is often possible to make useful variables local by transforming them into routine arguments. This process saves CPU time.
Development
#42
Keep repaint (appearance) and reflow (layout) to a minimum
A repaint is a change in appearance of a DOM (Document Object Model) element, while a reflow is a change/recalculation of the position of the elements in the DOM. You should avoid triggering these two operations as they are resource-expensive, especially in terms of CPU usage.
