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truncating an array #js #patterns

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TTimeBandit
Last edited Mar 19, 2019
Created on Mar 18, 2019

This example demonstrates a simple pattern for capping the length of a dataset before rendering, ensuring the visualization does not process more entries than necessary. The code checks whether the `data` array exceeds a predefined `MAX_ENTRIES` limit and, if so, uses the native JavaScript `Array.prototype.slice()` method to create a truncated copy containing only the first `MAX_ENTRIES` items. This prevents performance degradation from an oversized array. The example relies solely on core JavaScript array operations, with no external libraries or rendering APIs involved.

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