Does throttle queue calls in JavaScript?
No. The basic throttle implementation drops calls that happen within the interval. It does not queue them. Only calls that happen after the interval has passed execute.
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More FAQs in Debounce vs Throttle: Visual Explanation
Once. Only the last call executes, after the delay. All intermediate calls cancel and reset the timer. The function runs 300ms (or whatever the delay is) after the last call.
Multiple, at a fixed rate. For 5 calls over 800ms with a 300ms interval: executes at 0ms, 400ms, 800ms (3 times). Calls between executions are ignored.
Debounce: one execution at the end (after activity stops). Throttle: multiple executions spread out at a fixed rate. Debounce waits; throttle rate-limits.
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