Review frequent JavaScript events and apply debounce, which waits until activity stops, or throttle, which limits execution frequency. Identify handlers causing sluggish interfaces or excessive API calls, and define browser checks for the fixes.
Use when reviewing scripts, client components, bundles, or runtime behavior related to Debounce and throttle event handlers. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
Review the instructions the agent will receive before you install.
High-frequency events fire hundreds of times per second, causing UI jank, excessive API calls, and poor Interaction to Next Paint (INP) scores.
Review this JavaScript code for scroll, resize, input, mousemove, or other high-frequency event handlers that should use debounce or throttle.
Add debounce or throttle to high-frequency event handlers to limit execution rate and improve performance.
Explain the difference between debounce and throttle, and when to use each pattern for optimal performance.
Review scripts, client components, and browser execution paths related to Debounce and throttle event handlers. Flag exact imports, event handlers, runtime side effects, or blocking operations that violate the rule, and state how the change should be verified in the browser.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/javascript/debounce-throttle
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