Bootstrap JavaScript Overview
Bootstrap\'s JavaScript layer turns certain HTML patterns into interactive components such as modals, dropdowns, collapse panels, and tooltips.
Core concept
Explain the bundle, Popper-backed components, data attributes, JavaScript constructors, methods, events, and disposal. Clarify which components are CSS-only and which require JavaScript.
Using it in a real interface
Show a data-attribute trigger and an equivalent JavaScript initialization. Explain when the declarative approach is simplest and when application code needs direct control.
Implementation notes
Load the JavaScript bundle only once. Duplicate Bootstrap scripts can produce confusing event behavior and should be removed during debugging.
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