D3.js Data Joins: Index vs. Key-Based Matching for Dynamic Lists
When D3.js data changes order or membership, the default index join binds DOM nodes to the wrong objects. Use a key function to preserve item identity across renders.
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d3jsPrimeNG DataTable Virtual Scrolling Selection State Loss
Issue Overview The PrimeNG DataTable component supports virtual scrolling to handle large data sets efficiently. When selectionMode="multiple" is enabled, the documentation states that selected rows should remain selected even when they scroll out of the visible buffer. However, in practice, the component appears to clear the selection once the virtual scrol
Index‑based vs key‑based data joins: choosing the right binding strategy in D3
Goal Determine the appropriate data binding approach for a dynamic bar chart that may be reordered, filtered, or animated over time. Constraints and Uncertainty Using selection.data(values) without a key function binds elements by array index; reordering or inserting items can cause mismatched labels and transitions. Providing a key function (e.g., d => d